-71.62% is the change from 585 to 166
Calculation steps:
[( 166 - 585 ) ÷ 585] x 100 = -71.62%
Formula
Percentage change = [(166 - 585) / 585] x 100
Subtract the new number by the original number
166 - 585 = -419
-419 ÷ 585 = -0.7162393162393162
-0.7162393162393162 x 100 = -71.62%