The easiest way to calculate what amount of tip you should
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The only way to calculate percentage is to multiply the number you want the percentage of by the decimal percentage amount IE what is 30% of 400? 400 x .30= 120.00.
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1. Perform the division of the numbers you are given. For example, 35 out of 50 would be calculated as 35/50. This gives a result of 0.7. 2. Multiply the decimal number by 100 to
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For your example : 100.0 * 15.75 / 13.00  100.0; = + 21,15 %
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