50% is the change from 48 to 72
Calculation steps:
[( 72 - 48 ) ÷ 48] x 100 = 50%
Formula
Percentage change = [(72 - 48) / 48] x 100
Subtract the new number by the original number
72 - 48 = 24
24 ÷ 48 = 0.5
0.5 x 100 = 50%
Example