First divide the number by 100, then multiply the result by the percentage.
Example:
What is 16% of 48?
48 ÷ 100 = 0.48
0.48 × 16 = 7.68
So 16% of 48 is 7.68.

Divide the first number by the second number, then multiply the result by 100.
Example:
12 is what percent of 64?
12 ÷ 64 = 0.1875
0.1875 × 100 = 18.75
So 12 is 18.75% of 64.

First subtract the lower number from the higher to get the difference between them, next divide the result by the original number, then multiply that by 100.
Example:
What is the percent change from 120 to 180?
180 - 120 = 60
60 ÷ 120 = 0.5
0.5 × 100 = 50
So 120 to 180 is an increase of 50%.

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