Calculate percentage difference between two numbers in Excel Percentage change or percentage difference can be applied to any quantity that you measure over time.

Finding percentage change in Excel requires calculating the difference between two numbers, dividing that difference by the successive number and changing the decimal value to a percentage.

If you change the format of empty cells, any numbers you type in those cells are converted to percentages automatically.

If you have a lengthy column of numbers that you need to multiply by a percentage, Excel includes tools to instantly apply the product to the entire range of cells in the column.