-17.71% is the change from 192 to 158
Calculation steps:
[( 158 - 192 ) ÷ 192] x 100 = -17.71%
Formula
Percentage change = [(158 - 192) / 192] x 100
Subtract the new number by the original number
158 - 192 = -34
-34 ÷ 192 = -0.17708333333333334
-0.17708333333333334 x 100 = -17.71%