As a result a 20 percent increase would be multiplied by 120 percent and a 15 percent increase would be 115 percent or 115. New value old valueold value. Fire up Excel and give it a try.
The formula for calculating change is new value old value old value.
If you miss this step then you will get the figure represented by the percentage. The percentage increase between September and. The formula new_value-old_valueold_value can help you quickly calculate the percentage change between two numbers. As a result a 20 percent increase would be multiplied by 120 percent and a 15 percent increase would be 115 percent or 115.