How do you calculate a percentage with a calculator?

One of the quickest ways to calculate a percentage with a calculator is to convert the percentage into a decimal and multiply it by the number you’re trying to find the percentage of. For example, if you want to find 60% of 285, enter 285 x .6 into your calculator to get 171.

How do you calculate a percentage based on a part?

To calculate a percentage based upon a part (X) and a total (Y), divide the value of the part (X) by the total or whole amount (Y). Then, multiply the result by 100. As an example, if you want to find what percentage 15 is of 300, you would divide 15 by 300, resulting in 0.05. Multiplying 0.05 by 100 gives you 5%.

How do you write a percentage formula?

Although the percentage formula can be written in different forms, it is essentially an algebraic equation involving three values. P × V 1 = V 2 P is the percentage, V 1 is the first value that the percentage will modify, and V 2 is the result of the percentage operating on V 1.