In order from lowest chance to highest.

Blaze Kick - 10% chance to burn.
Bubble - 10% chance to lower speed.
Ember - 10% chance to burn.
Energy Ball - 10% chance to lower Sp.Def.
Flame Wheel - 10% chance to burn.
Freeze-Dry - 10% chance to freeze.
Ice Beam - 10% chance to freeze.
Metal Claw - 10% chance to raise Attack.
Poison Tail - 10% chance to poison.
Muddy Water - 10% chance to lower accuracy.
Scald - 10% chance to burn.
Sludge - 10% chance to poison.
Sludge Bomb - 10% chance to poison.
Night Daze - 10% chance to lower accuracy.
Smog - 10% chance to poison.
Bug Buzz - 15% chance to lower Sp.Def.
Confusion - 15% chance to cause confusion.
Earth Power - 15% chance to lower Sp.Def.
Flamethrower - 15% chance to burn.
Heat Wave - 15% chance to burn.
Play Rough - 15% chance to lower Attack.
Sludge Wave - 15% chance to poison.
Rock Climb - 15% chance to cause confusion.
Shadow Ball - 15% chance to lower Sp.Def.
Twineedle - 15% chance to poison. (If both shots hit, it's a 27.75% chance)
Water Pulse - 15% chance to cause confusion.
Waterfall - 15% chance to flinch.
Headbutt - 15% chance to flinch.
Icicle Crash - 15% chance to flinch.
Moonblast - 15% chance to lower Sp.Atk.
Snore - 15% chance to flinch.
Stomp - 15% chance to flinch.
Crush Claw - 15% chance to lower Defense.
Razor Shell - 15% chance to lower Defense.
Rock Smash - 15% chance to lower Defense.
Charge Beam - 15% chance to raise Sp.Atk.
Flame Charge - 15% chance to raise speed.
Acid - 20% chance to lower Sp.Def
Ancient Power - 20% chance to raise Atk, Def, Sp.Atk, Sp.Def, and Spd
Aurora Beam - 20% chance to halve the Attack stat.
Bone Club - 20% chance to flinch.
Bubble Beam - 20% chance to lower speed.
Constrict - 20% chance to lower speed.
Cross Poison - 20% chance to poison.
Extrasensory - 20% chance to flinch.
Fire Punch - 20% chance to burn.
Hyper Fang - 20% chance to flinch.
Iron Tail - 20% chance to lower Defense.
Ominous Wind - 20% chance to raise Atk, Def, Sp.Atk, Sp.Def, and Spd
Powder Snow - 20% chance to freeze.
Psybeam - 20% chance to cause confusion.
Psychic - 20% chance to lower Sp.Def.
Relic Song - 20% chance to cause sleep.
Signal Beam - 20% chance to cause confusion.
Silver Wind - 20% chance to raise Atk, Def, Sp.Atk, Sp.Def, and Spd
Thunderbolt - 20% chance to paralyze.
Dark Pulse - 20% chance to flinch.
Dizzy Punch - 20% chance to cause confusion.
Meteor Mash - 20% chance to flinch.
Tri Attack - 20% chance to freeze, burn, or paralyze.
Zen Headbutt - 20% chance to flinch.
Air Slash - 20% chance to flinch.
Body Slam - 20% chance to paralyze.
Discharge - 20% chance to paralyze.
Dragon Breath - 20% chance to paralyze.
Force Palm - 20% chance to paralyze.
Gunk Shot - 20% chance to poison.
Heart Stamp - 20% chance to flinch.
Iron Head - 20% chance to flinch.
Lava Plume - 20% chance to burn.
Needle Arm - 20% chance to flinch.
Poison Jab - 20% chance to poison.
Spark - 20% chance to paralyze.
Fiery Dance - 20% chance to raise Sp.Atk.
Fake Out - 20%
Flare Blitz - 25% chance to burn.
Focus Blast - 25% chance to lower Sp.Def.
Ice Punch - 25% chance to freeze.
Thunder Punch - 25% chance to paralyze.
Thunder Shock - 25% chance to paralyze.
Volt Tackle - 25% chance to paralyze.
Fire Fang - 25% chance to burn. 10% chance to flinch. (Probability of either occuring is a 32.5% chance)
Ice Fang - 25% chance to freeze. 10% chance to flinch.
Thunder Fang - 25% chance to paralyze. 10% chance to flinch.
Crunch - 25% chance to lower Defense.
Twister - 25% chance to flinch.
Astonish - 25% chance to flinch.
Bite - 25% chance to flinch.
Bounce - 25% chance to paralyze.
Lick - 25% chance to paralyze.
Poison Sting - 25% chance to poison.
Rock Slide - 25% chance to flinch.
Rolling Kick - 25% chance to flinch.
Searing Shot - 25% chance to burn.
Secret Power - 25% chance to inflict a status effect.
Steamroller - 25% chance to flinch.
Poison Fang - 25% chance to badly poison.
Blizzard - 30% chance to freeze.
Fire Blast - 30% chance to burn.
Steel Wing - 30% chance to raise Defense.
Blue Flare - 30% chance to burn.
Bolt Strike - 30% chance to paralyze.
Hurricane - 30% chance to cause confusion.
Sky Attack - 30% chance to flinch.
Thunder - 30% chance to paralyze.
Mirror Shot - 33% chance to lower accuracy.
Mud Bomb - 33% chance to lower accuracy.
Flash Cannon - 50% chance to lower Sp.Def.
Dragon Rush - 50% chance to flinch.
Freeze Shock - 50% chance to paralyze.
Ice Burn - 50% chance to burn.
Leaf Tornado - 50% chance to lower accuracy.
Seed Flare - 50% chance to harshly lower Sp.Def.
Diamond Storm - 50% chance to raise Defense by 1 stage.
Luster Purge - 50% chance to lower Sp.Def.
Mist Ball - 50% chance to lower Sp.Atk.
Octazooka - 50% chance to cause the Blinker status.
Sacred Fire - 50% chance to burn.
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All moves below have a 100% chance to activate their additional effect.

Acid Spray - Harshly lowers Sp.Def.
Bulldoze - Lowers speed.
Chatter - Causes confusion.
Dynamic Punch - Causes confusion.
Electroweb - Lowers speed.
Fling - ?
Glaciate - Lowers speed.
Icy Wind - Lowers speed.
Inferno - Burns.
Low Sweep - Lowers speed.
Mud Shot - Lowers speed.
Mud Slap - Lowers accuracy.
Mystical Fire - Lowers Sp.Atk.
Nuzzle - Paralyzes.
Power-Up Punch - Raises Attack.
Rock Tomb - Lowers speed.
Snarl - Lowers Sp.Atk.
Struggle Bug - Lowers Sp.Atk.
Zap Cannon - Paralyzes.
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Others:

The following moves have a 100% chance to lower your stats:

Overheat - Harshly lowers Sp.Atk.
Draco Meteor - Harshly lowers Sp.Atk.
Leaf Storm - Harshly lowers Sp.Atk.
Psycho Boost - Harshly lowers Sp.Atk.
Superpower - Lowers Attack and Defense.
Close Combat - Lowers Defense and Sp.Def.
Dragon Ascent - Lowers Defense and Sp.Def.
V-Create - Lowers Defense, Sp.Def, and Speed.
Hammer Arm - Lowers Speed.
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Increases and prevention

Serene Grace - Doubles the chance
Sheer Force - Effects are lost
Shield Dust - Protects against them
Water and Fire Pledge's Everlasting Rainbow - Doubles the chance. Stacks with Serene Grace.
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Critical Hit Rates

Super Luck
Choice Ribbon/Looplet
Fickle Ribbon/Looplet
Focus Looplet
Focus Energy - Increases ratio to 80% for a 86% total chance for normal moves.

All of the following moves below have a critical hit ratio of 20:

Aeroblast
Air Cutter
Attack Order
Blaze Kick
Crabhammer
Cross Chop
Cross Poison
Drill Run
Karate Chop
Leaf Blade
Night Slash
Poison Tail
Psycho Cut
Razor Leaf
Razor Wind
Shadow Claw
Sky Attack
Slash
Spacial Rend
Stone Edge

The following moves have a critical hit ratio of 100:

Frost Breath
Storm Throw
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Serene Grace Skill Swappers

Happiny/Chansey/Blissey
Jirachi
Meloetta
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