-93.4% is the change from 863 to 57
Calculation steps:
[( 57 - 863 ) ÷ 863] x 100 = -93.4%
Formula
Percentage change = [(57 - 863) / 863] x 100
Subtract the new number by the original number
57 - 863 = -806
-806 ÷ 863 = -0.9339513325608343
-0.9339513325608343 x 100 = -93.4%