-1.81% is the change from 498 to 489
Calculation steps:
[( 489 - 498 ) ÷ 498] x 100 = -1.81%
Formula
Percentage change = [(489 - 498) / 498] x 100
Subtract the new number by the original number
489 - 498 = -9
-9 ÷ 498 = -0.018072289156626505
-0.018072289156626505 x 100 = -1.81%