I'm looking at https://stakingether.com/ for the list of staking pools with the possible earning and fees the pools are charging. As I understand it, a fee is charged by these pools to provide their infrastructure and service running validator nodes.
Based on the screenshot above, what is the relationship between the fee and earning percentage? For Coinbase, surely the nett earning couldn't be -16.04% (8.96% - 25%). Could it mean that the fee is charged at 25% of ETH earned (25% * 8.96% = 2.24%)?