Percentage of a Number

This calculator finds a percentage of a number, in other words, how much a given percent of a number is.

A percent is one hundredth part of a whole. A percentage of a number is a part of that number.

How to find a percentage of a number?

To find a percentage of a number, use the following formula:

$\frac{\text{percent}}{100\%}·\text{number}$

where percent is the number of percent and number is the original number.

Example
Find 5% of 20:
$\frac{5\%}{100\%}·20=1$

Example
An item costs $34.70. When you buy two, there is a 5% discount. Find the discount amount.
$34.70·2=69.40$
$\frac{5\%}{100\%}·69.40=3.47$
So the discount is $3.47.