91.37% is the change from 139 to 266
Calculation steps:
[( 266 - 139 ) ÷ 139] x 100 = 91.37%
Formula
Percentage change = [(266 - 139) / 139] x 100
Subtract the new number by the original number
266 - 139 = 127
127 ÷ 139 = 0.9136690647482014
0.9136690647482014 x 100 = 91.37%