# How to Calculate Percentage: A Comprehensive Guide

Table Contents:

## The Basics of Percentage Calculation

Greetings Asensio,

Calculating percentages is a fundamental concept that we use every day, whether we’re calculating discounts on products, determining the probability of something happening, or tracking our financial goals. If you’re unfamiliar with how to calculate percentages or simply need a refresher, you’ve come to the right place.

In this article, we will go through the necessary steps involved in calculating percentages. We will also provide you with practical examples to help you understand the concept better. So, let’s get started!

### What is a Percentage?

Before we dive into the calculations, let’s define what a percentage is. Percentage is a way of expressing a number or ratio as a fraction of 100. The symbol for percentage is “%.” For example, 25% means 25 out of 100 or 0.25 as a decimal. Now that we understand what a percentage is, let’s move on to the calculations.

### How to Calculate Percentage

Calculating a percentage involves three main components: the whole, the part, and the percentage itself. The whole refers to the total amount or the baseline from which we calculate the percentage. The part refers to the amount that we want to calculate the percentage of. The percentage itself is the number that represents the portion of the whole.

### Step-by-Step Guide to Calculating Percentage

Here is a step-by-step guide on how to calculate percentage:

Step Formula
Step 1 Determine the whole
Step 2 Determine the part
Step 3 Divide the part by the whole
Step 4 Multiply the result from step 3 by 100 to get the percentage

Let’s take an example to illustrate this formula more clearly:

### Example:

Suppose you want to find out the percentage of students who passed an exam. If a total of 100 students took the exam and 75 of them passed, what is the percentage of students who passed?

Step 1: Determine the whole. In this case, the whole is the total number of students who took the exam, which is 100.

Step 2: Determine the part. In this case, the part is the number of students who passed the exam, which is 75.

Step 3: Divide the part by the whole. Divide 75 by 100 to get 0.75.

Step 4: Multiply the result from step 3 by 100 to get the percentage. Multiply 0.75 by 100 to get 75%. Therefore, the percentage of students who passed the exam is 75%.

#### 1. What are some practical applications of percentage calculations?

There are several practical applications of percentage calculations, including calculating discounts and tax rates, determining probabilities, tracking financial goals, and analyzing data trends.

#### 2. How do I convert a decimal to a percentage?

To convert a decimal to a percentage, multiply the decimal by 100 and add a “%” symbol at the end. For example, 0.75 as a percentage would be 75%.

#### 3. How do I convert a percentage to a decimal?

To convert a percentage to a decimal, divide the percentage by 100. For example, 75% as a decimal would be 0.75.

#### 4. What is a percentage change?

A percentage change refers to the difference between two values expressed as a percentage of the original value. It is calculated by subtracting the old value from the new value, dividing the result by the old value, and multiplying by 100.

#### 5. How do I calculate a percentage increase?

To calculate a percentage increase, subtract the original value from the new value, divide the result by the original value, and multiply by 100. For example, if a stock price increases from \$20 to \$25, the percentage increase would be: ((\$25 – \$20) / \$20) x 100 = 25%.

#### 6. How do I calculate a percentage decrease?

To calculate a percentage decrease, subtract the new value from the original value, divide the result by the original value, and multiply by 100. For example, if a stock price decreases from \$25 to \$20, the percentage decrease would be: ((\$25 – \$20) / \$25) x 100 = 20%.

#### 7. How do I calculate the percentage of a number?

To calculate the percentage of a number, divide the part by the whole and multiply by 100. For example, if you want to find out 25% of 200, you would calculate (25/100) x 200 = 50.

### Conclusion

In conclusion, calculating percentages is a straightforward process that involves determining the whole, the part, and the percentage itself. By following the steps outlined in this article, you can easily calculate percentages for any situation. Remember that percentages are a crucial component of many everyday tasks, from budgeting to analyzing data trends. So, we encourage you to use this newfound knowledge to your advantage and take action towards achieving your financial goals.

Thank you for taking the time to read this article. We hope it has been informative and valuable to you. If you have any additional questions or concerns, please do not hesitate to reach out.

### Disclaimer

While we have made every effort to ensure the accuracy of the information in this article, we cannot guarantee that it is 100% correct or up-to-date. The information provided is for educational purposes only and should not be construed as financial, legal, or any other kind of advice. You should always consult with a professional before making any financial decisions.