Theory
How do you calculate what percentage a part is?
A percentage compares a part with a whole, where the whole is 100%.
Divide the part by the whole to see what part of the total you have.
Then multiply by 100 and put a percent sign after it.
- Divide by the wholeDivide the part by the whole to see what part of the whole you have.
Dividing means sharing an amount fairly or seeing how many equal groups fit into it.
The first number is the total amount. The second number tells you what you divide by.
Always check whether the division works out exactly. If it does not, you get a decimal number or fraction as the answer.
- Convert to percentMultiply by 100 to write the part as a percentage.
You use multiplication with equal groups.
A × B means that you take the same amount B, A times.Instead of adding again and again, you calculate the product all at once.
What percentage is 12 of 60?
- Divide by the whole12 ÷ 60 = 0,2.
- Convert to percent0,2 × 100 = 20%.