-66.63% is the change from 857 to 286
Calculation steps:
[( 286 - 857 ) ÷ 857] x 100 = -66.63%
Formula
Percentage change = [(286 - 857) / 857] x 100
Subtract the new number by the original number
286 - 857 = -571
-571 ÷ 857 = -0.6662777129521587
-0.6662777129521587 x 100 = -66.63%