-51.92% is the change from 809 to 389
Calculation steps:
[( 389 - 809 ) ÷ 809] x 100 = -51.92%
Formula
Percentage change = [(389 - 809) / 809] x 100
Subtract the new number by the original number
389 - 809 = -420
-420 ÷ 809 = -0.519159456118665
-0.519159456118665 x 100 = -51.92%