-9.91% is the change from 858 to 773
Calculation steps:
[( 773 - 858 ) ÷ 858] x 100 = -9.91%
Formula
Percentage change = [(773 - 858) / 858] x 100
Subtract the new number by the original number
773 - 858 = -85
-85 ÷ 858 = -0.09906759906759907
-0.09906759906759907 x 100 = -9.91%