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Math Tutorial 5.3 - Percentage Increase and Decrease

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There are 5 lessons in this math tutorial covering Percentage Increase and Decrease. The tutorial starts with an introduction to Percentage Increase and Decrease and is then followed with a list of the separate lessons, the tutorial is designed to be read in order but you can skip to a specific lesson or return to recover a specific math lesson as required to build your math knowledge of Percentage Increase and Decrease. you can access all the lessons from this tutorial below.


In this Math tutorial, you will learn:

  • What is percentage change? How do you calculate it?
  • How to express a percentage increase/decrease?
  • What is the formula of percentage increase/decrease calculation?
  • How do you find the original value after a percentage change?
  • What is percentage distribution? Why do we use it?
  • What is the rule governing the percentage distribution in a data set?

Introduction

So far, we have discussed percentages and their analogue methods of expressing numbers (fractions & decimals). Now, we will explain in more detail how to deal with percentage changes - a very important and useful concept that has many practical applications, especially in finance and banking. Pay increases, tax cuts, and changes in interest rates - all represent percentage changes.

This tutorial is in line with the general opinion of scientists who support the idea that it is not very important to know the actual value of a quantity; rather, it is the way the quantity changes that really matters.

Please select a specific "Percentage Increase and Decrease" lesson from the table below, review the video tutorial, print the revision notes or use the practice question to improve your knowledge of this math topic.

Percentages Learning Material
Tutorial IDMath Tutorial TitleTutorialVideo
Tutorial
Revision
Notes
Revision
Questions
5.3Percentage Increase and Decrease
Lesson IDMath Lesson TitleLessonVideo
Lesson
5.3.1Percentage Change
5.3.2Percentage Increase
5.3.3Percentage Decrease
5.3.4Finding the Original Value after a Percentage Change
5.3.5Percentage Distribution

Whats next?

Enjoy the "Percentage Increase and Decrease" math tutorial? People who liked the "Percentage Increase and Decrease" tutorial found the following resources useful:

  1. Math tutorial Feedback. Helps other - Leave a rating for this tutorial (see below)
  2. Percentages Video tutorial: Percentage Increase and Decrease. Watch or listen to the Percentage Increase and Decrease video tutorial, a useful way to help you revise when travelling to and from school/college
  3. Percentages Revision Notes: Percentage Increase and Decrease. Print the notes so you can revise the key points covered in the math tutorial for Percentage Increase and Decrease
  4. Percentages Practice Questions: Percentage Increase and Decrease. Test and improve your knowledge of Percentage Increase and Decrease with example questins and answers
  5. Check your calculations for Percentages questions with our excellent Percentages calculators which contain full equations and calculations clearly displayed line by line. See the Percentages Calculators by iCalculator™ below.
  6. Continuing learning percentages - read our next math tutorial: Applications of Percentage in Banking. Simple and Compound Interest

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