-31.86% is the change from 857 to 584
Calculation steps:
[( 584 - 857 ) ÷ 857] x 100 = -31.86%
Formula
Percentage change = [(584 - 857) / 857] x 100
Subtract the new number by the original number
584 - 857 = -273
-273 ÷ 857 = -0.3185530921820303
-0.3185530921820303 x 100 = -31.86%