How to Find the Percentage of a Number (Mathematics Lesson)
Finding a Percentage of a NumberA percentage of a number lets us find part of a number.
Imagine 60% (60 percent) of a class of 25 students love mathematics.
15 students (60% of 25) love mathematics.
How to Find the Percentage of a NumberTo find the percentage of a number you have to divide the percentage by 100 then multiply the answer by the number:
A Real Example of How to Find the Percentage of a Number
An Example QuestionWhat is 60% of 25?
In our example, the number is 25 and the fraction is 60.
60 ÷ 100 = 0.6
0.6 × 25 = 15We have an answer:
Another Real Example of How to Find the Percentage of a NumberThe slider below gives another example of finding the percentage of a number.
Here's a second test on finding a percentage of a number.
Here's a third test on finding a percentage of a number.
What Is a Percentage?A percentage expresses a part of a whole number as parts out of 100.
"Per cent" means "per 100" or "out of 100".
A percentage is shown by the symbol %.
Explaining the FormulaFinding the percentage of a number uses the formula below:
In the example on this page, 60% of 25 has been expressed as the formula below:
60% has been written as a fraction (60/100). (Percentages and fractions are both ways of expressing a part of a whole).
Read more about converting percentages to fractions
Then part of the number is found by multiplying the fraction (60/100) with the number (25).
Read more about finding the fraction of a number