Mathematics

Percentage of a Number

Find a specified percentage of a number.

Value = (Percentage × Number) / 100

Formula Explanation

Multiply the number by the given percentage and divide by 100.

Variables Explained

Percentage = given rate; Number = original value.

Solved Example

Find 20% of 450.
Value = (20 × 450) / 100 = 90.

Exam Tip

Cancel common factors before multiplying to save time.