Thanks for the information and I have one last question

Here is the text at my freeroll page:

Play MULTIPLY BTC or buy lottery tickets to increase your FREE BTC rewards by up to +0.00000399 BTC

4.3180% achieved towards the next +0.00000021 BTC bonus!


What should this number (4.3180%) be for normal payouts, also what should be for max reward (0.00000399 BTC)?