# How do you find the percentage of a given number?

## How do you find the percentage of a given number?

1. How to calculate percentage of a number. Use the percentage formula: P% * X = Y

- Convert the problem to an equation using the percentage formula: P% * X = Y.
- P is 10%, X is 150, so the equation is 10% * 150 = Y.
- Convert 10% to a decimal by removing the percent sign and dividing by 100: 10/100 = 0.10.

## How do you find an unknown percentage?

When you have an equation such as 20% · n = 30, you can divide 30 by 20% to find the unknown: n = 30 ÷ 20%. You can solve this by writing the percent as a decimal or fraction and then dividing.

**How do I find the percentage difference between 2 numbers?**

To calculate the percentage increase:

- First: work out the difference (increase) between the two numbers you are comparing.
- Increase = New Number – Original Number.
- Then: divide the increase by the original number and multiply the answer by 100.
- % increase = Increase ÷ Original Number × 100.

**How do I figure out the ratio of two numbers?**

Calculate a ratio from two numbers. Generic formula. =num1/GCD(num1,num2)&”:”&num2/GCD(num1,num2) Explanation. To generate the ratio of two numbers to each other (e.g. 4:3, 16:9, etc.), you can do using division, the GCD function, and concatenation.

### How do you calculate the percentage of two numbers?

How to Show a Percentage Increase Between Two Numbers Subtraction Method 1: Calculate Change. In the subtraction method, you first calculate the amount of change between the initial quantity and the final amount. Subtraction Method 2: Divide and Multiply. Now, you divide the change by the initial total. Division Method 1: Divide New by Old. Division Method 2: Convert to Percentage and Subtract.

### How exactly do you find a percent of a number?

Multiply the number by the percent (e.g. 87*68 = 5916)

**How do you find the percentage change between two numbers?**

The percentage change between two numbers is found by dividing their difference by the number that is being changed from, then multiplying that result by 100%. Note: the percent change measures FROM the first value.