In cell C2 double-click the fill handle to copy the formula down to the other rows. For example if you have a column containing numbers and want to calculate 10 of one of those numbers enter 10 in another cell then use a formula using the asterisk as the multiplication operator. Lets do an example of an Array Formula to Calculate Total Sales in Excel for various products.
In cell B3 divide the second years sales 59863400 by the first year 48500000 and then subtract 1.
In the example shown the formula in D6 is. This formula divides the value in cell A1 by the value in cell B1. In cell B3 divide the second years sales 59863400 by the first year 48500000 and then subtract 1. If you are using Excel for the web click Home Number Format Percentage.