40% is the change from 120 to 168
Calculation steps:
[( 168 - 120 ) ÷ 120] x 100 = 40%
Formula
Percentage change = [(168 - 120) / 120] x 100
Subtract the new number by the original number
168 - 120 = 48
48 ÷ 120 = 0.4
0.4 x 100 = 40%
Example