-66.86% is the change from 860 to 285
Calculation steps:
[( 285 - 860 ) ÷ 860] x 100 = -66.86%
Formula
Percentage change = [(285 - 860) / 860] x 100
Subtract the new number by the original number
285 - 860 = -575
-575 ÷ 860 = -0.6686046511627907
-0.6686046511627907 x 100 = -66.86%