42.86% is the change from 84 to 120
Calculation steps:
[( 120 - 84 ) ÷ 84] x 100 = 42.86%
Formula
Percentage change = [(120 - 84) / 84] x 100
Subtract the new number by the original number
120 - 84 = 36
36 ÷ 84 = 0.42857142857142855
0.42857142857142855 x 100 = 42.86%