Percentage Change from 500 to 400

Change =  
Amount of Change/Number

Change =  
-100/500

Change = -0.2
-0.2 Converted to a Percent: -0.2 = -20%
Percentage Change from 500 to 400 (500 – 100) = -20%
Note: Percentage Change of -20% = Percentage Decrease of 20%

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