How to Calculate Percentage Change. Calculating percentage change is one of the most frequently used tasks in Excel. The basic formula is: (New Value / Old Value) – 1.

How do you calculate percentage increase or decrease in Excel Let us understand the basics of the percentage change. The percentage change is (new value-old value)/old value.

The call premium is the percent increase over the bond's face value which is paid by the issuing company to exercise their call option. Continuing the example, if the call premium was 10 percent ...