Therefore, to find 20% of a number, divide by 5 because 20 goes into 100 five times.
#FORMULAS FOR FIGURING PERCENTAGES HOW TO#
How to find the base value Example: Mr Smith gets 500 dollars interest, this equals 4. Subtract the old from the new, then divide by the old value. Remember, to find 10% of a number means dividing by 10 because 10 goes into 100 ten times. So this formula holds: Percentage value base value (percentage/100). Note: to change the percentage in cell A1, simply select cell A1 and type a new percentage (do not type a decimal number). To calculate a percentage of a total in your Excel spreadsheet, multiply the percentage value by the number that you want the percentage of: Example: If you have 500 items and you want to sell 80 of the items by the end of the quarter, figure out how. 9% means 9 out of every 100, or \(\frac\) of the amount.Īs finding 10% of a number means to divide by 10, it is common to think that to find 20% of a number you should divide by 20 etc. There are three basic ways to calculate percentage using Excel: 1. A percentage is a proportion that shows a number as parts per hundred.
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