What is the formula to convert marks to percent ? Share with your friends Share 2 Pooja answered this Formula for converting marks to percentage =Marks obtainedTotal marks×100Example: If you have got 72 marks out of total 80 marks in a test,then the percentage will be7280×100 = 728×10 = 9×10 = 90%This means, you have got 90% marks in your test.Hopt it helps you! 1 View Full Answer