-4.06% is the change from 813 to 780
Calculation steps:
[( 780 - 813 ) ÷ 813] x 100 = -4.06%
Formula
Percentage change = [(780 - 813) / 813] x 100
Subtract the new number by the original number
780 - 813 = -33
-33 ÷ 813 = -0.04059040590405904
-0.04059040590405904 x 100 = -4.06%