Shows the percentage of profit relative to the amount you stake.
Usually calculated as:
$$ ROI\% = \frac{\text{Potential Profit}}{\text{Total Stake}} \times 100 $$It represents the “net” profit in % if that specific bet wins.
Shows the total percentage profit from exploiting all odds across different sites.
Calculated as:
$$ Arb\% = \left(1 - \left(\frac{1}{\text{Odds}_1} + \frac{1}{\text{Odds}_2} + ...\right)\right) \times 100 $$If the result is positive, it means there is a guaranteed profit regardless of the outcome (true arbitrage).