-9.13% is the change from 843 to 766
Calculation steps:
[( 766 - 843 ) ÷ 843] x 100 = -9.13%
Formula
Percentage change = [(766 - 843) / 843] x 100
Subtract the new number by the original number
766 - 843 = -77
-77 ÷ 843 = -0.09134045077105575
-0.09134045077105575 x 100 = -9.13%