This calculator will help you find **X** is what percentage of **Y**.Enter the two numbers starting with what you wish to find is percentage (x) of then second number(y). Now click calculate, and the calculator will show you a step by step guide on how to calculate X is percentage of Y. In this guide, we will discuss everything you need to know to help you solve percentage problems.

**What is percentage?**

Percentage is a corresponding value that indicates any quantity in hundreds of parts. In other words you can define it as a part of a hundred. The word percent has been derived from per 100.

**Percentage Symbol**

%

**How to calculate X is what percentage of Y**

To find X is what percentage of we assume that Y is 100%. Therefore you can form an equation like the one below.

**X ****×**** 100 /y**

Now that we have derived the formula you can use it to solve other problems.

**Example 1: 50 is what percent of 90? **

**X = 50 **

**Y= 90**

**Step 1: **Multiply 50 by 100

**50 ****× 100 = 5000**

**Step 2: **Divide the answer in step 1 by 90

**5000/90 = 55.555556**

Therefore **50** is **55.555556% **of **90**

**Example 2: 20 is what percent of 200?**

**X= 20**

**Y = 200**

**Step 1: **Multiply 20 by 100

**20 ****× 100 =2000**

**Step 2: ** Divide the answer in step 1 by 200

**2000/200 = 10**

Therefore **20** is **10% **of **200**

**Example 3: 40 is what percent of 10?**

**X = 40 **

**Y= 10**

**Step 1: **Multiply 40 by 100

**40 ****× 100 = 4000**

**Step 2: **Divide the answer in step 1 by 10

**4000/10 =400**

Therefore 40 is** **400% of** ****10**

**Uses of percentage**

Percentage is used in almost every industry in the world. Here are some examples.

**1.** To calculate ban interest rates

**2.** Percentage is used to find discounts in shops

**3.** Percentage is used to calculate the rate of inflation

**4.** Percentage is used to analyze and compare the performance

**5.** It is used to in most financial aspects