How to Calculate Percentage

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Use these steps to calculate percentage, without a calculator.

Step 1: Write a division problem
Write a division problem by dividing the unknown percentage of the total by the total.

Tip
When you are calculating a percentage less than 100, always divide the smaller number by the larger number.

Step 2: Complete the division
Complete the computation using long division. The result – or quotient – will include a decimal.

Step 3: Multiply by 100
Multiply the resulting quotient by 100 to convert it to a percentage. This is the percentage of the original amount.

Tip
Move the decimal point in the quotient two places to the right to multiply by 100.

Step 4: Pick up the check
Pick up the check. You no longer have an excuse to be a lousy tipper!

Did You Know?
Did you know? The percent symbol can be traced back to the 15th century, when it was used in business transactions.

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