-66.39% is the change from 857 to 288
Calculation steps:
[( 288 - 857 ) ÷ 857] x 100 = -66.39%
Formula
Percentage change = [(288 - 857) / 857] x 100
Subtract the new number by the original number
288 - 857 = -569
-569 ÷ 857 = -0.6639439906651109
-0.6639439906651109 x 100 = -66.39%