percent increase and decrease is how much percent it had increased from a certain amount of number, like discounts and markups
The percent in the decrease of 25 to 20 = 20%
This is a decrease of 12%
It is a 40% decrease.
A percent of decrease (percentage decrease) is when a value is reduced by a percentage of its original amount. e.g. 100 decreased by 15 percent is 85. A percent of increase (percentage increase) is when a value in increased by a percentage of its original amount. e.g. 100 increased by 15 percent is 115.
The increase is 10 out of 25. 10/25 = 0.4 = 40%
The class enrollment increased by 3 students. This is the equivalent of 20%.
There will be an overall increase in the first number.