-46.48% is the change from 839 to 449
Calculation steps:
[( 449 - 839 ) ÷ 839] x 100 = -46.48%
Formula
Percentage change = [(449 - 839) / 839] x 100
Subtract the new number by the original number
449 - 839 = -390
-390 ÷ 839 = -0.464839094159714
-0.464839094159714 x 100 = -46.48%