I actually just looked at that page, then came here and saw you posted a link to it. Thanks. So, I'll try that with my game...

cookies = 10.35 - this is all of the cookies, so the cookies are worth just over 500 HC total, which becomes less and less significant as you get more and more HC.

HC = 207.26

Sum of the above: 217.61

Milk = 4.6

kittens are: 1.23, 1.46, 1.92, and 1.92

multiply the kittens and sum of HC/cookies: 217.61*1.23*1.46*1.92*1.92 ~ 1440.59. multiply by 100 to get a percentage, **144,059%**

The game says my multiplier is 157,327%. This is close enough that I think I just made a small error... maybe I miscounted my cookies...