Percentages aren't always easy to calculate, but one of the best tools in Excel's toolbox is calculating percentages for you. Here's how to do it.

Product Function Excel provides the PRODUCT () function to calculate the original value by the percentage markup. Place your original value or cost into column A and label it with a description.

This post will show you how to calculate the percentage difference between two numbers in Excel. using this formula you can find percentage difference easily.

If you need to find the percentage change in Excel, especially across a range of cells, then this post offers step by step guidance.

This formats the cells as percentages, so when you enter your formulas, the output will be properly formatted. Enter "= (C2-B2)/B2" in cell D2 to calculate the straight-line decline percentage.