Calculating Percentage Increase 1. The confusion arises from the fact that after one reaches age 66 their retirement benefits will increase by 8 percent of their age-66 benefit for each year one delays. Rearrange the equation from the beginning of this section and you will get this.
To calculate the annual rate of growth we now need to put our two previous answers together to get to a rate of growth.
For example if your total revenue in 2019 was 100000 and your total revenue in 2018 was 85000 subtract 85000 from 100000 for a difference of 15000. Write down the starting value and end value. The formula for calculating the annual growth rate is Growth Percentage Over One Year. The percentage gain would be calculated as follows.