-4.7% is the change from 809 to 771
Calculation steps:
[( 771 - 809 ) ÷ 809] x 100 = -4.7%
Formula
Percentage change = [(771 - 809) / 809] x 100
Subtract the new number by the original number
771 - 809 = -38
-38 ÷ 809 = -0.04697156983930779
-0.04697156983930779 x 100 = -4.7%