If You already have %dmg rolled (let's say 6%, and wanna know how It would be if you roll 10%):
big dps * 1.10/1.06 (multiplying by 1.WISHED%, dividing by 1.ACTUAL%)
now that i have you here, i know tools like rerollcalculator exist for this purpose alone, but i've been curious on how to calculate the min/max damage rerolls
edit: staying on topic, rerolling base damage will you give better results, but my dead honest opinion is that a weapon wtihout both damage% AND good base damage isn't worth using on the mainhand;\, this would be good for an N6 offhand
now that i have you here, i know tools like rerollcalculator exist for this purpose alone, but i've been curious on how to calculate the min/max damage rerolls
edit: staying on topic, rerolling base damage will you give better results, but my dead honest opinion is that a weapon wtihout both damage% AND good base damage isn't worth using on the mainhand;\, this would be good for an N6 offhand
Season 7 Hardcore Demon Huntard #14 @ GR78
Unhallowed Essence Multishot Guide