51.08% is the change from 139 to 210
Calculation steps:
[( 210 - 139 ) ÷ 139] x 100 = 51.08%
Formula
Percentage change = [(210 - 139) / 139] x 100
Subtract the new number by the original number
210 - 139 = 71
71 ÷ 139 = 0.5107913669064749
0.5107913669064749 x 100 = 51.08%