Microsoft Office Excel includes dozens of function options to help you automatically generate values in cells across a spreadsheet. If you have a lengthy column of numbers that you need to ...

To increase the values by a certain percentage, add 100 to the percentage and enter the number with the percent sign, such as "150%" to add a 50 percent profit margin.

Whether it’s a confusing formula, a misstep with zero values, or an unexpected error, Excel can feel like a maze when it comes to percentages.