Enter the units you won or lost and the units you staked. The calculator returns your profit as a percentage of the money you risked, which is your return on investment.
Example: 5 units of profit on 100 units staked is a 5% ROI. A loss of 3 units on 60 staked is -5%.
ROI is a better measure than win rate because it accounts for price. A bettor who wins 40% of bets at +200 is profitable, and one who wins 60% at -200 is losing.