Heres a typical reverse percentage question. Step 2 Divide the percentage by 100 to convert it to a decimal. Change the percentage from Step 1 to decimal by moving two decimal places to the left.
How to calculate reverse percentage.
Using equivalent ratios students learn how to work a percentage change in reverse to calculate the original 100 value. Find 1 by dividing the current price by 75. Mr Jeffery going through some non-calculator examples of finding an original amount when given an amount that has had a percentage taken from or added to it. Multiply this 1 by 100 to find the original price 100 previous 1 2.