I am a tourney noob, but I am pretty adept at math (or at least I was 20 years ago in High-School), so hopefully I am explaining this right. This is my laymen's understanding of ROI in HM.
You should not be multiplying your divisor (BuyIns) by 100
The return on investment formula:
Code:
(Gain Form Investment - Cost of Investment)
ROI = ---------------------------------------------------------
Cost of Investment
Your cost of investment was $95.70
That money is gone, and no longer your own.
Your return on that investment was $102.24
You got your entire investment back (100%) + the profits, for an ROI of >100%