-86.28% is the change from 583 to 80
Calculation steps:
[( 80 - 583 ) ÷ 583] x 100 = -86.28%
Formula
Percentage change = [(80 - 583) / 583] x 100
Subtract the new number by the original number
80 - 583 = -503
-503 ÷ 583 = -0.8627787307032591
-0.8627787307032591 x 100 = -86.28%