-71.53% is the change from 583 to 166
Calculation steps:
[( 166 - 583 ) ÷ 583] x 100 = -71.53%
Formula
Percentage change = [(166 - 583) / 583] x 100
Subtract the new number by the original number
166 - 583 = -417
-417 ÷ 583 = -0.7152658662092625
-0.7152658662092625 x 100 = -71.53%