-0.2% is the change from 490 to 489
Calculation steps:
[( 489 - 490 ) ÷ 490] x 100 = -0.2%
Formula
Percentage change = [(489 - 490) / 490] x 100
Subtract the new number by the original number
489 - 490 = -1
-1 ÷ 490 = -0.0020408163265306124
-0.0020408163265306124 x 100 = -0.2%