-10.12% is the change from 168 to 151
Calculation steps:
[( 151 - 168 ) ÷ 168] x 100 = -10.12%
Formula
Percentage change = [(151 - 168) / 168] x 100
Subtract the new number by the original number
151 - 168 = -17
-17 ÷ 168 = -0.10119047619047619
-0.10119047619047619 x 100 = -10.12%