Just enter the original amount in the box on the left and the final amount in the box on the right

For instance, if you are looking for the percent of decrease for 20 and 10, enter 20 in the box on the left and 10 in the box on the right.

Just hit the calculate button and you are good to go.

Recall that to get the percent of decrease, you need to do the following:

Amount of decrease/ original amount

Then, convert the answer into percent

For example, find the percent of decrease from 60 to 30

Amount of decrease is 60 − 30 = 30

Original amount is 60

30 /60 = 0.5

multiply 2 by one hundred to get the answer as a percent

0.5 × 100 = 50, so the answer is 50%.