The change in value is divided by the original value and then multiplied by 100. A percent change is the variation expressed in percent of a quantity over time. DV V1 100 V2 - V1 V1 100 percentage change.
Percent Change New Value Old Value Old Value.
Percentage Actual Value Total Value 100 Some other important percentage formula of percentage change are. Percentage change 20 - 16 16 This gives the result 025 or 25. Calculate the first percentage by dividing the number you wish to find the percentage of by 100. Next subtract the old value from the new value.