So is the calculation above correct ? Are you adding 1% to the original total coins ?
What I would then do is add up the new total of adjusted coins. Divide this into 100. Then multiply by each individual adjusted total to get your payout percentage for each address. When you add up the adjusted coins totals you do not include polonoiex.
This is what I have done anyway and it works well. I'll show you later today. But if it is not right it can be easily changed.