How to Determine Percentages Using Division

1. Start by determining what needs to be divided by what. For example, if you want to know what percentage score you achieved on a test, you will be dividing the number of questions you got right by the number of total questions.
2. Use a calculator or a pencil and paper to do your division. Let's say you got 35 questions correct out of 50. You will enter 35 divided by 50 into your calculator. The answer is .7.
3. Multiply the number by 100 to get it in a percentage. In this case .7 multiplied by 100 equals 70, or 70 percent.