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. This can also be accomplished using the percentage difference calculator and the percentage change calculator. Subtract the decrease from 100.
The next question from 2002 is similar but about a percent increase.
Percent decrease formula Percent decrease original_value - new_valueoriginal_value 100. 400000 500000 08 then multiply by 100 to get 80 then subtract that from 100. How to Calculate Percentage Decrease Subtract starting value minus final value. Online based free reverse percentage calculator to check original value by using percentage of increase or decrease with new or part value.