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Calculating a Percentage
You can fi nd the percentage of a number or what percentage one number is of another number. To
fi nd the percentage of a number, change the percentage into a decimal by moving the decimal point
two places to the left. Then, multiply the decimal by the number.
To fi nd what percentage one number is of another, divide the fi rst number by the second number.
Then, convert the quotient into a percentage by moving the decimal point two places to the right.
Skills Workshop 13
See It
Calculate 14% of 1,248.
Step 1: Change 14% into a decimal by moving the decimal point two places to
the left (14 → 0.14).
Step 2: Multiply 1,248 by 0.14 to fi nd the answer (1,248 × 0.14 = 174.72).
Check It
1. What is 2.5% of $578?
2. What is 0.05% of 10.65?
3. What is 1.87% of 54.3?
4. What is 102.3% of 5.75?
See It
Calculate what percentage 27 is of 429.
Step 1: The divisor is 429. The dividend is 27.
Step 2: Divide 27 by 429 (27 ÷ 429 ≈ 0.63).
Step 3: Convert 0.63 to a percentage by moving the decimal point two places to
the right (0.63 → 63%).
Check It
1. What percentage of 35 is 42?
2. What percentage of 117.5 is 9.8?
3. What percentage of 1,034 is 58.2?
4. What percentage of $184,352.90 is $105.98?
5. What percentage of $58.92 is $11.78?