Reverse percentages When calculating the original amount before a percentage decrease we are working backwards to find how much the item was before it was reduced. Current price is 100 - 25. This then gives us the original price of the item.
X y 107100.
Add the percentage to 100This means that if we want to look for the original number given that if we increase. This then gives us the original price of the item. Reverse percentage can be calculated by dividing a known amount by 1 minus the discount rate or 1 plus the tax rate. How to Calculate Reverse Percentage.