# Percentage Calculator for Various Calculations

Calculating percentages is a common task in many areas of life, whether you’re working with finances, analyzing data, or planning a budget.

## Percentage Calculator introduction

Thankfully, with the help of a percentage calculator, percentage calculations can be done quickly and accurately.

In this article, we will explore four different scenarios where a percentage calculator can be useful:

### 1. Calculating a value from a percentage of a number

One common use of a percentage calculator is to determine a specific value based on a given percentage of a number. For example, let’s say you want to calculate 20% of 150. To do this, simply enter 20 as the percentage and 150 as the number into the calculator. The result will be 30, which is 20% of 150.

To make this process even easier, you can use the following formula:

**Value = Percentage × Number**

Using this formula, you can quickly calculate any value from a percentage of a number without the need for complex calculations.

### 2. Decrease/increase by a given percentage

Another handy feature of a percentage calculator is the ability to calculate a decrease or increase by a given percentage. This can be useful when you want to determine the final value after a discount or a price increase. For instance, if an item originally costs $100 and you want to calculate a 15% decrease, enter -15 as the percentage and 100 as the original value. The calculator will give you the final price of $85.

Similarly, if you want to increase a value by a certain percentage, you can use the formula:

**New Value = Value + (Value × Percentage)**

By applying this formula, you can easily calculate the new value after an increase or decrease by a given percentage.

### 3. Percentage increase/decrease, from A to B

When you have two different values and want to calculate the percentage increase or decrease from one value to another, a percentage calculator can come in handy. Let’s say you want to find out the percentage increase from 50 to 75. Enter 50 as the original value and 75 as the new value. The calculator will show you that there has been a 50% increase from 50 to 75.

To determine the percentage increase or decrease from A to B, you can use the formula:

**Percentage = ((B – A) / A) × 100**

For example, if the population of a city increased from 500,000 to 600,000, you can calculate the percentage increase as follows:

**Percentage Increase = ((600,000 – 500,000) / 500,000) × 100 = 20%**

Conversely, if the population decreased from 600,000 to 500,000, the percentage decrease would also be 20%.

### 4. Percentage of A in B

Calculating the percentage of one value in relation to another is another useful feature of a percentage calculator. For example, if you want to find out what percentage 25 is of 100, enter 25 as the part and 100 as the whole into the calculator. The result will be 25%, indicating that 25 is 25% of 100.

To find the percentage of A in B, you can use the formula:

**Percentage = (A / B) × 100**

For example, if you want to calculate the percentage of 75 in 200, the calculation would be:

**Percentage = (75 / 200) × 100 = 37.5%**

Using this formula, you can easily determine the percentage of one value in relation to another.

## Percentage Calculator Tool

Now that you have a better understanding of the different types of percentage calculations, it’s time to introduce you to our handy percentage calculator tool. With this tool, you can easily perform percentage calculations without the need for manual calculations or complex formulas.

Our percentage calculator allows you to input the necessary values and automatically calculates the result for you. Whether you need to determine values, calculate a percentage increase, percentage decrease, find percentage changes, and percentages of number A in number B, our tool has got you covered.

Using our percentage calculator is simple. Just input the required values into the corresponding fields, and the calculator will instantly provide you with the result. It’s a quick and efficient way to save time and ensure accurate calculations.

## Percentage calculator summary

A percentage calculator is a valuable tool for a wide range of calculations involving percentages. Whether you need to calculate a value from a percentage, determine a decrease or increase, find the percentage change between two values, or calculate the percentage of one value in relation to another, a percentage calculator can save you time and effort. By inputting the necessary values into the tool, you can quickly obtain accurate results for your percentage calculations.

Next time you find yourself needing to perform any of these calculations, remember to use a percentage calculator to simplify the process and ensure accuracy.