-8.18% is the change from 489 to 449
Calculation steps:
[( 449 - 489 ) ÷ 489] x 100 = -8.18%
Formula
Percentage change = [(449 - 489) / 489] x 100
Subtract the new number by the original number
449 - 489 = -40
-40 ÷ 489 = -0.081799591002045
-0.081799591002045 x 100 = -8.18%