-10.72% is the change from 858 to 766
Calculation steps:
[( 766 - 858 ) ÷ 858] x 100 = -10.72%
Formula
Percentage change = [(766 - 858) / 858] x 100
Subtract the new number by the original number
766 - 858 = -92
-92 ÷ 858 = -0.10722610722610723
-0.10722610722610723 x 100 = -10.72%