[Pre-BB] MapleStory Formula Compilation

Do you mean an X% damage reduction to your base range or as a modifier to monster defense?

Applied as base range.


Simple example, against Grendel the really old (>_>) who is level 80 with 120 wdef, if you were level 70 and had a range of 500~1000, you would get reduction like that:
10% off
450~900
-60~66 due to wdef (.5-.6 multiplier, it is random)
384-839 [840 is only possible if you roll exactly 60, it'll normally be 60.000001 or higher which is rounded in favour of the monster so you get 61 reduced]

Then multiply by skills.