-49.44% is the change from 890 to 450
Calculation steps:
[( 450 - 890 ) ÷ 890] x 100 = -49.44%
Formula
Percentage change = [(450 - 890) / 890] x 100
Subtract the new number by the original number
450 - 890 = -440
-440 ÷ 890 = -0.4943820224719101
-0.4943820224719101 x 100 = -49.44%