-47.24% is the change from 851 to 449
Calculation steps:
[( 449 - 851 ) ÷ 851] x 100 = -47.24%
Formula
Percentage change = [(449 - 851) / 851] x 100
Subtract the new number by the original number
449 - 851 = -402
-402 ÷ 851 = -0.47238542890716806
-0.47238542890716806 x 100 = -47.24%