-85.84% is the change from 579 to 82
Calculation steps:
[( 82 - 579 ) ÷ 579] x 100 = -85.84%
Formula
Percentage change = [(82 - 579) / 579] x 100
Subtract the new number by the original number
82 - 579 = -497
-497 ÷ 579 = -0.8583765112262521
-0.8583765112262521 x 100 = -85.84%