Question

How do you change a fraction to a percent and a percent to a decimal, and what is the formula for percentage change?

Accepted Answer

Changing fractions to percents: Divide the numerator by the denominator. Multiply by 100. Affix the percent (%) sign.   
Changing percents to decimals: Divide by 100, then remove the % sign.
Formula for percentage change: $$\frac{(New\;Value - Old\;Value)}{Old\;Value}$$. Affix the % sign.

Flashcard 11 - Quantitative Flashcard Set for the GMAT

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