Before knowing how to calculate a percentage, what is a percentage? In this article, we will discuss in detail what percentage is, how to calculate the percentage of increase and decrease, how to estimate the percentage of a number using the percentage formula with examples. Percentage-related topics are presented to the student in Class 7 and Class 8 study program.

The concept of percentage is used to measure the price trend in relation to the original price. This is a great application in business when calculating the percentage of profit and loss. Also, in schools and colleges, marks obtained by students are estimated using the percentage formula. Percent basically defines the ratio of any value multiplied by 100 to an integer value. The symbol used to denote percentage is “%”. Let us know how to calculate the percentage value.

## Percent meaning:

Percentage means the number or ratio expressed in terms of fractions of 100. This is indicated using the percentage sign “%”. The abbreviation used to represent a percentage is “pct” or “pc”. In other words, a percentage or percentage is defined as the quantity of one quantity created by another and evaluated with respect to 100.

## Formula percentage:

Now, to calculate the percentage we need to know its formula. The formula for calculating a percentage is the ratio of the real value multiplied by 100 to the total value. The percentage formula is:

Percent,% = (Value × 100) / Total Price

Verify: formula percentage

Some other significant percentage formulas are:

#### The formula for percentage change:

- Increase percentage
- Percentage reduction
- Error percentage formula

**The formula for percentage change**

% Change = ((new value – original value) × 100) / original price

There are two types of the percentage change. They are

**Percentage increment****Percentage reduction**

## Percentage increment

When the new price is greater than the original price, the percentage change in price indicates the percentage increase from the original number, so that:

Percent increase (% increase) = original price / value x 100 increase

Where price increase = new value – original price

## Percentage reduction:

When the new price is less than the original price, the percentage change in price represents a percentage less than the original number, so that:

Decreasing percentage (decreasing%) = decrease in original value / value x 100

Where Price Reduction = Original Price – New Price

Also check: Percent increase and decrease

## Error percentage formula

This is the formula to calculate the percentage of the error in a number or value.

% Error = (error × 100) / actual value

## How to calculate the percentage of a number:

In general, numbers that are being converted to percentages are given in two forms.

**Decimal Form:**

If the number is given in decimal format, it is easy to find the percentage. To get the percentage, multiply the given number by 100. For example, the given number is 0.45. To convert to percentage, 0.45 * 100 = 45%

**Part form**: If the number is given in fractional format, first divide it by the top value and divide it by the total value, and then multiply it by 100.

Using percentage formulas, it is easy to know how to calculate the percentage of the brand, discount, etc.