-4.53% is the change from 817 to 780
Calculation steps:
[( 780 - 817 ) ÷ 817] x 100 = -4.53%
Formula
Percentage change = [(780 - 817) / 817] x 100
Subtract the new number by the original number
780 - 817 = -37
-37 ÷ 817 = -0.04528763769889841
-0.04528763769889841 x 100 = -4.53%