-50% is the change from 890 to 445
Calculation steps:
[( 445 - 890 ) ÷ 890] x 100 = -50%
Formula
Percentage change = [(445 - 890) / 890] x 100
Subtract the new number by the original number
445 - 890 = -445
-445 ÷ 890 = -0.5
-0.5 x 100 = -50%
Example