adding a percentage in excel
Open Microsoft Excel. Step 2. Enter the percentage you wish to add in cell B1 and include the percent sign, which automatically formats the number as a percentage. As an example, you might enter 50% in cell B1. To avoid confusion, enter Markup Percentage in cell A1, so you know the number in B1 is your markup.Related Reading: How to Formulate a Percentage in Excel. Step 3. List the values to which you wish to add a percentage in column A, beginning at cell A2.For dollar values, adding the dollar sign automatically formats the number as currency. As an example, you might enter $20.00, $10.75, $15.25 and $7.95 in cells A2 through A5.s an example, you might enter 50% in cell B1. To avoid confusion, enter Markup Percentage in cell A1, so you know the number in B1 is your markup. Related Reading: How to Formulate a Percentage in Excel. Step 3. List the values to which you wish to add a percentage in column A, beginning at cell A2.