The simple formula for determining project ROI is:

a$.$

Project ROI $=($Financial Gain $/$ Project Cost$)$ X $100$

b$.$

Project ROI $=($Financial Gain or Loss Project Cost $/$ Project Cost$)/1000$

c$.$

Project ROI $=($Financial Gain or Loss Project Cost $/$ Project Cost$)$ X $100$

d$.$

Project ROI $=($Financial Gain or Loss Project Cost $/$ Project Cost$)$