-0.41% is the change from 491 to 489
Calculation steps:
[( 489 - 491 ) ÷ 491] x 100 = -0.41%
Formula
Percentage change = [(489 - 491) / 491] x 100
Subtract the new number by the original number
489 - 491 = -2
-2 ÷ 491 = -0.004073319755600814
-0.004073319755600814 x 100 = -0.41%