-89.15% is the change from 857 to 93
Calculation steps:
[( 93 - 857 ) ÷ 857] x 100 = -89.15%
Formula
Percentage change = [(93 - 857) / 857] x 100
Subtract the new number by the original number
93 - 857 = -764
-764 ÷ 857 = -0.8914819136522754
-0.8914819136522754 x 100 = -89.15%