-7.69% is the change from 845 to 780
Calculation steps:
[( 780 - 845 ) ÷ 845] x 100 = -7.69%
Formula
Percentage change = [(780 - 845) / 845] x 100
Subtract the new number by the original number
780 - 845 = -65
-65 ÷ 845 = -0.07692307692307693
-0.07692307692307693 x 100 = -7.69%