Is there any way to Ev down the Ev's of an Pokemon...?

Question

And can you still Ev train when a Pokemons level is 100? And in some answers theres some Ev's like 252 Sp.attack/4 Speed/254 Defense but can you have 4 speed and 252 attack.

Comments

Maybe with berries.

Answer 1

Yes you can do it with the EV reducing berries.
>Pomeg Berry – Lowers a Pokémon's HP by 10 EVs.
Kelpsy Berry – Lowers a Pokémon's Attack by 10 EVs.
Qualot Berry – Lowers a Pokémon's Defense by 10 EVs.
Hondew Berry – Lowers a Pokémon's Special Attack by 10 EVs.
Grepa Berry – Lowers a Pokémon's Special Defense by 10 EVs.
Tamato Berry – Lowers a Pokémon's Speed by 10 EVs.

Source