-1.81% is the change from 497 to 488
Calculation steps:
[( 488 - 497 ) ÷ 497] x 100 = -1.81%
Formula
Percentage change = [(488 - 497) / 497] x 100
Subtract the new number by the original number
488 - 497 = -9
-9 ÷ 497 = -0.018108651911468814
-0.018108651911468814 x 100 = -1.81%