How To Siphon Value Away From Iterative Calculation

three people with different amounts of money. Each 'turn', they take 10% of what they have and pass the rest to the players either side of them. The amount they pass to each varies, but that isn't important.

The problem is that I need some way to record the 10% (or 20%, or 30%, or whatever) that they take off on each iteration. Currently the iteration will simply reset the value in the field. So if they had $100 in iteration one, it reads $10. But another iteration (with the amount of money in the loop decreasing), it changes to a lower value and the '$10' is lost. Is there any way you can have a formula that takes a value from the iteration each loop and isn't in turn changed each time? I basically just want to have 'value loop 1'+'value loop 2'+'value loop 3', etc. As it stands I lose the information.