I figured this is the board to ask, being the DPS board and all.

My question is, how do stacking damage boosts work? For example I know that defiance on a WAR reduces base damage down to 75%, so the damage boost from Maim (20%) isn't increasing it to 95% in defiance but is instead increasing it by 20% of 75, which makes it 90% of normal damage.

So how does that work with +dmg buffs? If you stack Raging Strikes on top of B4B is it completely additive? Or does activating one buff increase the base damage such that the second buff boosts the buffed damage instead of by the base damage?

If that's confusing I'll provide an example. Thanks!