Not completely... is there a general formula? How did you get those values 240 and 150?You have to find the actual stat of the pokemon then double.
MAx attack adamant azumarril hits 218*2 = 436, which is about base 145-150 attack.
Jolly max attack Mega medicham is about a base 240 attack, whilst adamant is too high to compare it to any other stat.
I hoped this answered your question
EDIT: nvm, my question is answered
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