-80.86% is the change from 857 to 164
Calculation steps:
[( 164 - 857 ) ÷ 857] x 100 = -80.86%
Formula
Percentage change = [(164 - 857) / 857] x 100
Subtract the new number by the original number
164 - 857 = -693
-693 ÷ 857 = -0.808634772462077
-0.808634772462077 x 100 = -80.86%