The percentage increase over a given period is a measurement that signifies larger trends of growth marketing. To calculate the difference as a percentage we subtract this months value from last months and then divide the result by last months value. Below is a formula for how to calculate sales growth.
To start the equation subtract last years number from this years number.
If thats not the case you may have to calculate GDP first by using the income approach or the expenditure approach. What is the formula for calculating the percent growth rate. About Percent Growth Rate Calculator. To start subtract the net sales of the prior period from that of the current period.