More precisely the held back amount calculation doesn’t yet work on the web dashboard. This leads to it assuming 75% will be held back and that’s what you see in the totals. I’m not entirely sure why storage calculation doesn’t match either, but that one is really close and I think the dashboard might simply use slightly older stats for that calculation.
To be honest, I’m actually really pleased with how well they match for the values that are already implemented correctly. It’s a confirmation for me that I did it right when building the calculator.