-12.5% is the change from 192 to 168
Calculation steps:
[( 168 - 192 ) ÷ 192] x 100 = -12.5%
Formula
Percentage change = [(168 - 192) / 192] x 100
Subtract the new number by the original number
168 - 192 = -24
-24 ÷ 192 = -0.125
-0.125 x 100 = -12.5%