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Return of investment (ROI) is a main indicator of the profitability of your campaign. It shows the percentage of the money you earned as a fraction of the money you have invested.
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ROI = 0%: means that you neither gained or lost any money.
ROI > 0%: means that your profit was greater than zero and you’ve earned some money. For example, if ROI = 150%, you have earned 50% more money that you have invested in running your campaigns.
If ROI < 0%: means that you have spent more money than you have earned.
Return on investment (%) = (Total revenue ($) - Total cost ($) ) / Total cost ($) * 100%
ROI Formula Example: (({ftd_revenue} - {ftd_payout}) / {ftd_payout})