Q on Potential Stats

I believe % WA is from the WA from your equips, like claw, glove, PAC, etc.
% Total damage is from your total damage range.

so you add up all your wa to take % from that = %wa

then your range (that XXX~XXX number?) is what you take the %total dmg from?

Sorry, I never really paid attention to range and stuff on my chars (xD cuz i never really cared). Just trying to figure out if it is to better to keep "%total dmg" or cube for something better (excluding %boss, i kno thats only from unique status).

-- edit --

Thanks guys! you posted before i did xD im not too good at calculating all these formulas. Really appreciate the clearup!