-12.5% is the change from 168 to 147
Calculation steps:
[( 147 - 168 ) ÷ 168] x 100 = -12.5%
Formula
Percentage change = [(147 - 168) / 168] x 100
Subtract the new number by the original number
147 - 168 = -21
-21 ÷ 168 = -0.125
-0.125 x 100 = -12.5%