For example input 25-5 in the function bar and press Enter. To subtract the numbers in column B from the numbers in column A execute the following steps. Type a minus sign - after the cell reference.
Follow these steps to subtract numbers in different ways.
Make the cell reference of the deduction number absolute to prevent the cell address changing when the formula is copied. Now separate the time with minus - which will subtract the time as shown below. In Excel the formula starts with a equal operator. As an example lets subtract numbers in column C from the numbers in column B beginning with row 2.