% Stat Potentials affect base or total stat?

For as long as I've been playing this game, I never knew if the % stat from potentials are based off the base stat or total. Some of my guildies say it's only affected by the base stat, and advised me to scroll equips for dex rather than luk (since I'm a thief and I'm having trouble trying to maintain enough dex to prepare for switching into the empress set even at lvl 200 and adding the remaining AP into dex). He said since % stat potentials only affect base, it doesn't matter if i scroll for dex or luk, but since I need dex, it would be more essential.

So does the % stat potentials affect the base stat or total?


Thanks in advance.

% stat multiplies with all +stat bonuses that are not potential bonuses.

It adds with all +stat bonuses that are potential bonuses.