-54.26% is the change from 857 to 392
Calculation steps:
[( 392 - 857 ) ÷ 857] x 100 = -54.26%
Formula
Percentage change = [(392 - 857) / 857] x 100
Subtract the new number by the original number
392 - 857 = -465
-465 ÷ 857 = -0.5425904317386231
-0.5425904317386231 x 100 = -54.26%