Board Thread:Questions and Answers/@comment-43540932-20191129231109/@comment-36503390-20191130014140

I should also say that, when you're calculating separately-calculated buffs for units like AGL Metal Coora, you would subtract the original stat boost (in Coora's case, 80% ATK) from the total stat boost (206% ATK), and then you would divide that total by the numbers of attacks that unit needs to get their buff, which, in Coora's case, is 7 attacks

First, you would subtract 80% from the total total buff:

206% - 80% = 126%

Then divide the result by the number of attacks:

126% / 7 attacks = 18% ATK per attack received.