We have the percent times the base is equal to some amount. The number 25 is what percentage of 80. Solve the equation when the sale price is 97.
The percentage increase calculator is a useful tool if you need to calculate the increase from one value to another in terms of a percentage of the original amount.
15 015 Step 2. The equation for percentage is this. If it helps we could rewrite this as 025 which is the same thing as 25. The coefficient of R is one so the arithmetic for combining like terms is 1 - 015 85.