-47.61% is the change from 857 to 449
Calculation steps:
[( 449 - 857 ) ÷ 857] x 100 = -47.61%
Formula
Percentage change = [(449 - 857) / 857] x 100
Subtract the new number by the original number
449 - 857 = -408
-408 ÷ 857 = -0.47607934655775963
-0.47607934655775963 x 100 = -47.61%