Ever thought it'd be cool to have your art, writing, or challenge runs featured on PokéCommunity? Click here for info - we'd love to spotlight your work!
Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
Berries don't decrease EVs, I think. And they don't raise EVs either. Berries are for Poffins or healing items in battle.
Why would you want to decrease EVs anyway? There is no way to decrease EVs besides getting a new pokemon.