figuring out percentage
To figure out a percentage, turn the percentage into a decimal, then multiply the decimal value by the total. To turn a percentage into a decimal, move the original decimal two places to the left. If your percentage is a whole number without a visible decimal, this invisible decimal is located at the end of the number.or example, to figure out an 18 percent tip on a $32.74 bill, first convert 18 percent to .18. Multiply .18 and 32.74, and you will get a total value of 5.8932. Because money is only two decimal points, this tip will round to $5.89. To find the total bill, add $5.89 to $32.74.