120% is the change from 140 to 308
Calculation steps:
[( 308 - 140 ) ÷ 140] x 100 = 120%
Formula
Percentage change = [(308 - 140) / 140] x 100
Subtract the new number by the original number
308 - 140 = 168
168 ÷ 140 = 1.2
1.2 x 100 = 120%
Example