-4.82% is the change from 809 to 770
Calculation steps:
[( 770 - 809 ) ÷ 809] x 100 = -4.82%
Formula
Percentage change = [(770 - 809) / 809] x 100
Subtract the new number by the original number
770 - 809 = -39
-39 ÷ 809 = -0.048207663782447466
-0.048207663782447466 x 100 = -4.82%