Question: how to work out percentage of two sums?
Answer: The mathematical formula for calculating percentage is as follows: (part / whole) * 100. To find a percent of a number, use this variant of the formula: (number * percent) / 100. Or move the comma in percentage by 2 characters to the left and perform only multiplication. For example, 10% of 100 is 0.1 * 100 = 10.