-46.2% is the change from 909 to 489
Calculation steps:
[( 489 - 909 ) ÷ 909] x 100 = -46.2%
Formula
Percentage change = [(489 - 909) / 909] x 100
Subtract the new number by the original number
489 - 909 = -420
-420 ÷ 909 = -0.46204620462046203
-0.46204620462046203 x 100 = -46.2%