-9.35% is the change from 845 to 766
Calculation steps:
[( 766 - 845 ) ÷ 845] x 100 = -9.35%
Formula
Percentage change = [(766 - 845) / 845] x 100
Subtract the new number by the original number
766 - 845 = -79
-79 ÷ 845 = -0.09349112426035502
-0.09349112426035502 x 100 = -9.35%