51.8% is the change from 139 to 211
Calculation steps:
[( 211 - 139 ) ÷ 139] x 100 = 51.8%
Formula
Percentage change = [(211 - 139) / 139] x 100
Subtract the new number by the original number
211 - 139 = 72
72 ÷ 139 = 0.5179856115107914
0.5179856115107914 x 100 = 51.8%