The percent of decrease means "what is the percentage decrease from a larger number to a smaller number?"
For example:
What is the percentage decrease from 90 to 72?
Solution:
(90 - 72) / 90 = %
18 / 90 = 1 / 5 = .2 = 20%
Check:
90 * .2 = 18
90 - 18 = 72 = true!
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Percent decrease is when your overall percentage goes down. Example: I take a 4 problem math test and get one wrong, 75%. I take a 2 problem math test and get one wrong, 50%.
here an example: price: 230 dollars after a 20% decrease you have 184 dollars and the math equation is: pricex0.8 (230x0.8=184)
9.5238% decrease.
20 percent decrease.