Question about new gathering ablilities

[stebo104]

My question is for the following 2 abilities: Impulsive Appraisal 2 and Bountiful Yield 2
First IA2 has a 30%-100% chance for Discerning Eye to proc, depending on Perception amount
Second BY2 increases yield by 1-3 depending on Gather amount

So how high does gathering and Perception have to be for each lvl of gathered item for each yield or % increase? (lets say % had 10% increases)