-85.76% is the change from 583 to 83
Calculation steps:
[( 83 - 583 ) ÷ 583] x 100 = -85.76%
Formula
Percentage change = [(83 - 583) / 583] x 100
Subtract the new number by the original number
83 - 583 = -500
-500 ÷ 583 = -0.8576329331046312
-0.8576329331046312 x 100 = -85.76%