-48.21% is the change from 168 to 87
Calculation steps:
[( 87 - 168 ) ÷ 168] x 100 = -48.21%
Formula
Percentage change = [(87 - 168) / 168] x 100
Subtract the new number by the original number
87 - 168 = -81
-81 ÷ 168 = -0.48214285714285715
-0.48214285714285715 x 100 = -48.21%