22.3% is the change from 139 to 170
Calculation steps:
[( 170 - 139 ) ÷ 139] x 100 = 22.3%
Formula
Percentage change = [(170 - 139) / 139] x 100
Subtract the new number by the original number
170 - 139 = 31
31 ÷ 139 = 0.22302158273381295
0.22302158273381295 x 100 = 22.3%