My mistake. I meant to write 80% (as in minimum 20% goes to curators). I fixed my post now. Does it make sense now?

Yes, I worry about the cognitive load too. Perhaps displaying it by default isn't so important because of the minimum going to the curators. Perhaps by default it could just use some icon to indicate whether: curators get the hardcoded minimum percentage of payout for this post; curators get 100% of the payout for this post; or, custom payout for curators (hover over icon to see detailed percentage).