# Percentage: How to calculate the percentage

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A fundamental component of many aspects of life is knowing how to calculate the percentage of the number. To make car payments or to make the down payment for a home, for example, you may need to know how to calculate the rate of change. Calculations of ratio are also important in the enterprise and are used in several professional circles, such as calculating taxes or increasing employees. In this article, we examine how to calculate different percentage components and their types.

## What is the percentage?

The percentage, also called the percent, is a fraction of a 100% number. Thus, the rate of change is “per 100” and refers to a total amount of one single piece.

For example, 45% of the total amount represents 45 out of 100, or 45%.

The percentage can also be called “out of 100” or “out of 100” percent.

For example, you can say “20 days out of 100 snowed,” or you can say “20% of the time it snowed.”

There may be a percentage written in several ways. It is a decimal one way of writing or specifying a portion.

24% can also be written, for example, as 0.24. By dividing the percentage by 100 you can find the decimal version of a percent.

## How to calculate the percentage easily

An allotment can be calculated in a couple of ways. The following formula is a common strategy for determining something’s percentage:

### 1.Determine the total amount of the percentage you would like to see :

You would use the number of days in that month as the total amount, for example, if the allotment of days that rained in a month were to be calculated. So, in April, which lasts 30 days, we are assessing the amount of rain.

### 2.Divide the number for which the percentage is to be determined :

Let’s say from the example above that 15 days in April were rained out of 30 days. So you divide between 15 and 30, equivalent to 0.5.

### 3.Multiply step 2 by 100 value :

You will multiply 0.5 by 100 if you continue with the example above. So that is 50, which gives you a 50 percent answer. So 50 percent of the time, it rained in April.

### 4.The percentage is determined :

A question may be asked to ask for a percentage problem, where you need to find the portion: “What percentage of 5 is 2?” In this example, the amount of 2 is part of the whole of 5 must be determined by a percentage. You can divide the number that you want to transform into a percentage in whole for this kind of problem. So, you would divide two by 5 with this example. This would provide you with 0.4 and then multiply 100 with 0.4.

2÷5= 0.4

0.4×100 = 40%

The general formula for what percent of y is x?

(x/y) ×100

### 5.      The starting number :

A percentage problem that requires you to find the starting number could look like “45% of what is 2?” This is usually a harder equation but can easily be solved using the above formula. You would like to divide the entire percentage by that type of problem. You would be able to split two by 45% or by 45% by example of “45% of what is 2?” This means that two is 45% from 4.4. This would give you 4.4.

## How to calculate percentage change?

A percentage change is a mathematical value that indicates the extent of the time change. In finance, it is most often used to determine the price change of a security over time. However, this formula can be used for any number measured over time.

A percentage change is the same as the difference in the value. By dividing the entire value by the original value, a percentage change can be resolved and multiplied by 100. The formula to resolve a percentage change.

For a price or increase percentage:

[(New Price – Old Price)/Old Price] x 100

For a price or  decrease percentage:

[(Old Price – New Price)/Old Price] x 100

## How to calculate the percentage difference?

You can compare two different items with each other by using percentages. For instance, you might want to determine the cost of a product last year instead of a similar product this year. That will give you the percentage difference between the prices of the two products.

The formulation used in calculating a percentage difference using the  following formula:

|V1 – V2|/ [(V1 + V2)/2] × 100

V1 is equal to one product’s cost, and V2 is equal to the other product’s cost.

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