64.03% is the change from 139 to 228
Calculation steps:
[( 228 - 139 ) ÷ 139] x 100 = 64.03%
Formula
Percentage change = [(228 - 139) / 139] x 100
Subtract the new number by the original number
228 - 139 = 89
89 ÷ 139 = 0.6402877697841727
0.6402877697841727 x 100 = 64.03%