-2.01% is the change from 497 to 487
Calculation steps:
[( 487 - 497 ) ÷ 497] x 100 = -2.01%
Formula
Percentage change = [(487 - 497) / 497] x 100
Subtract the new number by the original number
487 - 497 = -10
-10 ÷ 497 = -0.02012072434607646
-0.02012072434607646 x 100 = -2.01%