-33.49% is the change from 857 to 570
Calculation steps:
[( 570 - 857 ) ÷ 857] x 100 = -33.49%
Formula
Percentage change = [(570 - 857) / 857] x 100
Subtract the new number by the original number
570 - 857 = -287
-287 ÷ 857 = -0.3348891481913652
-0.3348891481913652 x 100 = -33.49%