-55.06% is the change from 890 to 400
Calculation steps:
[( 400 - 890 ) ÷ 890] x 100 = -55.06%
Formula
Percentage change = [(400 - 890) / 890] x 100
Subtract the new number by the original number
400 - 890 = -490
-490 ÷ 890 = -0.550561797752809
-0.550561797752809 x 100 = -55.06%