61.63% is the change from 86 to 139
Calculation steps:
[( 139 - 86 ) ÷ 86] x 100 = 61.63%
Formula
Percentage change = [(139 - 86) / 86] x 100
Subtract the new number by the original number
139 - 86 = 53
53 ÷ 86 = 0.6162790697674418
0.6162790697674418 x 100 = 61.63%