-47.71% is the change from 809 to 423
Calculation steps:
[( 423 - 809 ) ÷ 809] x 100 = -47.71%
Formula
Percentage change = [(423 - 809) / 809] x 100
Subtract the new number by the original number
423 - 809 = -386
-386 ÷ 809 = -0.47713226205191595
-0.47713226205191595 x 100 = -47.71%