-40.48% is the change from 168 to 100
Calculation steps:
[( 100 - 168 ) ÷ 168] x 100 = -40.48%
Formula
Percentage change = [(100 - 168) / 168] x 100
Subtract the new number by the original number
100 - 168 = -68
-68 ÷ 168 = -0.40476190476190477
-0.40476190476190477 x 100 = -40.48%