-16.19% is the change from 809 to 678
Calculation steps:
[( 678 - 809 ) ÷ 809] x 100 = -16.19%
Formula
Percentage change = [(678 - 809) / 809] x 100
Subtract the new number by the original number
678 - 809 = -131
-131 ÷ 809 = -0.1619283065512979
-0.1619283065512979 x 100 = -16.19%