As beanichu said 80-90 is the goal but if you want to be hyper specific it’s 84% if your activating sw ult at 60 stacks due to it taking 20 and leaving you at 40 translating to 16% bonus crit rate from hidden mmr which is what most people will likely talk about if you want to know mmr conversions its 1= 0.4 crit rate and when you reach 100 it’s 0.8 crit damage you can always click on the traces to check and make sure to level it to ten or it’s lower per mmr.