# X percent of Y calculator

Percentage Calculator

This calculator will help you find the percentage of another number. Type in the percent in the first input box followed by the number that you wish to find the percentage of.

## What is percent?

Percent is the short form for percentage which refers to the representation of a figure in a ratio of 100. It is represented by the symbol %. Percentage is very beneficial in our everyday lives. Furthermore, it offers a simple way for comparison compared to fractions. For example, Percentage is applied in banks where they calculate interests, as a percentage.

We use percentage in three major ways. First is to express a fraction of something. For example, 200 boys which is 20% of boys in the school are absent today. In this statement, we have expressed a fraction of boys as a percentage.

Second way we use percentage is when calculation change. For instance, the number of forest fires has increased by 10% to 744 fires. Lastly, Percentage is useful when comparing two items. For example, A Ferrari is 50% faster than a Bentley.

## How to calculate X percent of Y

Example1: What is 30 percent of 60?

Step 1: You can also express the above problem as 30% × 40

Step 2: 30/100 × 40

Step 3: 1200/100 = 12

Thus 30 percent of 40 is 12

Example 2: What is 90 percent of 10?

Step 1: You can express this problem as 90% of 10

Step 2: Simplify 90/100 ×10

Step 3: 900/100= 9

Therefore 90% of 10 is 9

Example 3: What is 80 percent of 400?

Step 1: Express the problems as follows: 80% of 400

Step 2: 80/100 × 400

Step 3: 32000/100 =320

Therefore 80 percent of 400 is 320

## X percent of Y video tutorial

1. How do you add 10% to a number?

Let’s say you want to increase the price of a bag that costs \$90 by 10%. First, represent 90 as 100% which is expressed by 90/100. Now multiply it by 10%. You will get 900/100 or \$9 when simplified. Lastly, add \$9 to 90. Therefore, When you add 10% to 90

2. How to find the percentage decrease of a number?

For example, you want to find the percentage decrease of 20% on a watch that costs \$300. First, express, \$300 as 100 percent which is 300/100 or 3. Now multiply 3 by 20 which is 60. Now subtract 60 from 300 to get 240.

3. How do you calculate what percentage a number is of another number?

If you a given a number and the asked what percentage of another number it is follow these steps.

Let’s say the first number is 50 and the second number is 500. Express 500 as 100% which is 500/100 OR 5. Now divide 50 by 5 which is 10. Thus 50 is 10% of 500.

## Other Solved Examples of X percent of Y

1. What is 5 percent of 30?

2. What is 99 percent of 1?

3. What is 20 percent of 50?

4. What is 3 percent of 100?

5. What is 70 percent of 43?