how to increase a value by a percentage in excel
Free Excel Help. Increase/Decrease Excel Values. If you have values on an Excel Worksheet that you need to permanently increase, or decrease you can use Paste Special. Increase/Decrease Excel Values by Percentage. Let's say you have a list of values in A1:A100 and you need to increase these values all by 15%.Here is how; 1  Enter the number 1.15 into any blank cell and then Copy it. 2  Now select the range A1:A100 and go to Edit Paste Special. 3  Choose Values from under Paste and then Multiply under Operation and click OK.et's say you have a list of values in A1:A100 and you need to increase these values all by 15%. Here is how; 1  Enter the number 1.15 into any blank cell and then Copy it. 2  Now select the range A1:A100 and go to Edit Paste Special.