-46.55% is the change from 840 to 449
Calculation steps:
[( 449 - 840 ) ÷ 840] x 100 = -46.55%
Formula
Percentage change = [(449 - 840) / 840] x 100
Subtract the new number by the original number
449 - 840 = -391
-391 ÷ 840 = -0.4654761904761905
-0.4654761904761905 x 100 = -46.55%