-87.92% is the change from 679 to 82
Calculation steps:
[( 82 - 679 ) ÷ 679] x 100 = -87.92%
Formula
Percentage change = [(82 - 679) / 679] x 100
Subtract the new number by the original number
82 - 679 = -597
-597 ÷ 679 = -0.8792341678939617
-0.8792341678939617 x 100 = -87.92%