Percentage Change from 40 to 70

Change =  
Amount of Change/Number

Change =  
30/40

Change = 0.75
0.75 Converted to a Percent: 0.75 = 75%
Percentage Change from 40 to 70 (40 + 30) = 75%
Note: Percentage Change of 75% = Percentage Increase of 75%

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