-51.19% is the change from 168 to 82
Calculation steps:
[( 82 - 168 ) ÷ 168] x 100 = -51.19%
Formula
Percentage change = [(82 - 168) / 168] x 100
Subtract the new number by the original number
82 - 168 = -86
-86 ÷ 168 = -0.5119047619047619
-0.5119047619047619 x 100 = -51.19%