Hi @crypto.piotr
A very valid point you have raised that this % is not the right way instead it should be only focused on the amount a person uses to power up. I have over 10k SP and if I powerup 1k then its just 10% of mine whereas a use having 500 SP powerup 100 seem only then it will be 20%..
May be @kiwiscanfly and @xpilar will make some changes in the event this time.

I am in and will power up for sure with the maximum amount possible. Thanks @juanmolina for this great post. Resteem done for more attention by more steemians.