87.05% is the change from 139 to 260
Calculation steps:
[( 260 - 139 ) ÷ 139] x 100 = 87.05%
Formula
Percentage change = [(260 - 139) / 139] x 100
Subtract the new number by the original number
260 - 139 = 121
121 ÷ 139 = 0.8705035971223022
0.8705035971223022 x 100 = 87.05%