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Calculating Percentage Change

Method

Percentage Change

The percentage change is the change in percent when a quantity has changed. For example, buying a house for and selling it for results in a profit. What is then the percentage change?

1

Determine increase or decrease

Determine if the situation is a increase or decrease.

Increase New number Old number
Decrease Old Number New Number

Since it's an increase.

2

Calculate change

When the change is an increase, the old number should be subtracted from the new one.

3

Calculate percentage change

The percentage change can now be found by dividing the change with the old number and multiply by The percentage change is