-88.68% is the change from 857 to 97
Calculation steps:
[( 97 - 857 ) ÷ 857] x 100 = -88.68%
Formula
Percentage change = [(97 - 857) / 857] x 100
Subtract the new number by the original number
97 - 857 = -760
-760 ÷ 857 = -0.8868144690781797
-0.8868144690781797 x 100 = -88.68%