I've been wondering if there are any formulas or sheets out there that show us the percentage when a stat is increased. For example, determination boosts skill damage and self-healing but after which amount? Like every 10-20-30 determination equals +1% increased healing and damage?

I find this to be extremely important for all classes and especially on tanks regarding stat allocation. I have somehow balanced determination/crit rate/sks on my warrior but im afraid i have melded smth that might be useless after some point.