84.52% is the change from 84 to 155
Calculation steps:
[( 155 - 84 ) ÷ 84] x 100 = 84.52%
Formula
Percentage change = [(155 - 84) / 84] x 100
Subtract the new number by the original number
155 - 84 = 71
71 ÷ 84 = 0.8452380952380952
0.8452380952380952 x 100 = 84.52%