-82.73% is the change from 579 to 100
Calculation steps:
[( 100 - 579 ) ÷ 579] x 100 = -82.73%
Formula
Percentage change = [(100 - 579) / 579] x 100
Subtract the new number by the original number
100 - 579 = -479
-479 ÷ 579 = -0.8272884283246977
-0.8272884283246977 x 100 = -82.73%