2.21% is the change from 136 to 139
Calculation steps:
[( 139 - 136 ) ÷ 136] x 100 = 2.21%
Formula
Percentage change = [(139 - 136) / 136] x 100
Subtract the new number by the original number
139 - 136 = 3
3 ÷ 136 = 0.022058823529411766
0.022058823529411766 x 100 = 2.21%