Step 1 Get the percentage of the original number. For example 45 represents 45 out of 100 or 45 percent of the total amount. Use tab to move to the next field.
To increase a number by a percentage in Excel execute the following steps.
Enter the percentage by which you want to reduce the original amount in the second column. Percent of number calculator will give you the answer its 35. If youre using Excel Online select Home point to Number Format and choose Percentage. Enter the percentage by which you want to reduce the original amount in the second column.