# How to work out percentages

Updated on July 4, 2012

## Struggling with percentages?

Percentages can be confusing... here is a short guide to help you manually work out some common percentage calculations.

## Lesson 1: Working out X percent of Z

So you have an amount... and you want to know what a certain percentage of that amount is?

Here's How:

(X represents the number/amount, Z represents whatever percentage you'd like to know)

1. X divided by 100 = (Whatever it equals)
2. (Whatever it equals) multiplied by Z = Your result

It really is that simple.

## Lesson 2: Adding X percent to Z

So you have an amount... and would like to add a certain percentage of that amount onto it? (for example, if the price of something is going to increase by 20 percent and you'd like to know how much it's going to cost)

Here's How:

1. Complete lesson 1
2. Add the result of lesson 1 to the original number to get the total value

## Lesson 3: Taking X percent from Z

So you have an amount... and would like to deduct a certain percentage of that amount from it? (for example, if the price of something has a 25% reduction and you'd like to know how much that works out to be)

Here's How:

1. Complete lesson 1
2. Subtract the result of lesson 1 from the original number to get newly reduced value

view quiz statistics

7

6

## Popular

59

24

• ### How to Do a Simple Regression using a Casio Calculator

2

0 of 8192 characters used
• AUTHOR

John Crowley

6 years ago from Sheffield

Much appreciated, thanks

• KwameG

6 years ago from MS

Where was this last week when I needed. :-) good hub, thanks i think I will bookmark it.

working