154.17% is the change from 120 to 305
Calculation steps:
[( 305 - 120 ) ÷ 120] x 100 = 154.17%
Formula
Percentage change = [(305 - 120) / 120] x 100
Subtract the new number by the original number
305 - 120 = 185
185 ÷ 120 = 1.5416666666666667
1.5416666666666667 x 100 = 154.17%