-30.62% is the change from 823 to 571
Calculation steps:
[( 571 - 823 ) ÷ 823] x 100 = -30.62%
Formula
Percentage change = [(571 - 823) / 823] x 100
Subtract the new number by the original number
571 - 823 = -252
-252 ÷ 823 = -0.30619684082624543
-0.30619684082624543 x 100 = -30.62%