PokéBase - Pokémon Q&A
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I am trying to figure out this equation for catch rate I am a strate A student in math but I still can't understand it Chance = Ball (((TotalHP x 4 - CurrentHP x 2) x CatchRate)/ TotalHP)+Status +1

i am trying to catch latias I am useing the love ball it is down to one hit point and is paralyzed

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I'll just answer this for Gen IX and try to explain the formula in simple terms. If you don't understand, come back once you've passed Algebra!

image

A doozy huh.

Walking through every point, here's what that means:

  • Max HP: The number of hit points the Pokemon has at full health
  • Current HP: The number of hit points the Pokemon has when you throw a ball at it
  • Dark Grass: Despite only being available in Gen V, dark grass mechanics are still in the game's code. You can read how this affects catch rate in Gen V here.
  • Modified Rate is the standard catch rate of your Pokemon. From what I can find, the catch rate is only "modified" when you use Heavy Balls. Let me know if I'm incorrect there.
  • Ball Bonus is the multiplier depending on what ball you're using
  • Badge Penalty "is applied when the wild Pokemon is more than 5 levels above the player's current obedience level, and is equal to 0.8n, where n is the number of Gym Badges that would be needed for it to obey."
  • Bonus Level is a multiplier added when the Pokemon is below Level 13.
  • Bonus Status is applied when a Pokemon is under a status condition. (1.5x)
  • Bonus Miscellaneous is added when Capture Powers are under effect. The multiplier can be 1.1, 1.25, or 2 for Powers Level 1, 2, and 3 respectively.

A simpler way to figure out catch chance of a Pokemon at 1 HP is with this formula:

Chance = CatchRate×BallBonus×StatusBonus/255

So, for example, throwing an Ultra Ball at Pokemon with a Catch rate of 45 that's at 1 HP and Paralyzed results in

45×2×1.5/255 = ~52.9% chance to catch

Source

I hope this makes sense, and please correct me if I'm wrong.

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You won't be able to catch Latias using a Love Ball. The Love Ball increases chances 8 times, but only if your pokemon is the same as the opponent but opposite gender. In other words, you need to be using a male Latias which doesn't exist! I don't think using a Latios will work.

Anyway I wouldn't worry about the exact formula. Just know what the balls do. I find the Dusk Ball is the best since you get 4x catch rate in caves or at night (that's when I play the game mostly anyway).

Also, sleep and freeze are better than other status conditions, they get 2x catch rate but paralyze, poison and burn are only 1.5.

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actually according to a website it is just the opposite gender