-93.7% is the change from 857 to 54
Calculation steps:
[( 54 - 857 ) ÷ 857] x 100 = -93.7%
Formula
Percentage change = [(54 - 857) / 857] x 100
Subtract the new number by the original number
54 - 857 = -803
-803 ÷ 857 = -0.9369894982497082
-0.9369894982497082 x 100 = -93.7%