-12.03% is the change from 158 to 139
Calculation steps:
[( 139 - 158 ) ÷ 158] x 100 = -12.03%
Formula
Percentage change = [(139 - 158) / 158] x 100
Subtract the new number by the original number
139 - 158 = -19
-19 ÷ 158 = -0.12025316455696203
-0.12025316455696203 x 100 = -12.03%