By: Lucy Primiano Rose O’Neill Brittney Williamson

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Presentation transcript:

By: Lucy Primiano Rose O’Neill Brittney Williamson Percent of Change By: Lucy Primiano Rose O’Neill Brittney Williamson

What is Percent of Change? Percent of Change is used to show the change in the quantity of an amount. Vocab: Increase- to make bigger, markup, tax, etc. Decrease- to make smaller, discount, on sale, reduce, etc.

How to Find Percent of Change There are two ways to find percent of change, depending on whether you are finding the increase or decrease in amount Percent of Increase: New Amount – Original Amount Original Amount Percent of Decrease: Original Amount – New Amount

Percent of Increase Percent of Increase is the percent of the quantity growth, or when the amount of something becomes bigger. For example: A store sells shirts for $10 each. The store decides to markup the shirts to $15 each. $15 - $10 $10 New Amount 33% Original Amount Original Amount

EXAMPLES $321 - $123 603 - 199 $123 199 60 – 24 $876 - $823 24 $823 $267 - $92 54 - 11 $92 11

Percent of Decrease Percent of Decrease is the percent of quantity reduction, or when the amount of something becomes smaller. For example: A store sells shirts for $15 each. The store decides to put the shirts on sale for $10 each. $15 - $10 $15 Original Amount 33% New Amount Original Amount

EXAMPLES $543 - $345 $112 - $65 $543 $112 $478 - $201 344 - 249 $478 344 44 – 24 75 - 50 44 75

Review Percent of Change is used to find the percent of increase or decrease of an amount. Percent of Increase= New Amount - Original Amount / Original Amount Percent of Decrease= Original Amount - New Amount / Original Amount