-87.82% is the change from 673 to 82
Calculation steps:
[( 82 - 673 ) ÷ 673] x 100 = -87.82%
Formula
Percentage change = [(82 - 673) / 673] x 100
Subtract the new number by the original number
82 - 673 = -591
-591 ÷ 673 = -0.8781575037147102
-0.8781575037147102 x 100 = -87.82%