-5.8% is the change from 517 to 487
Calculation steps:
[( 487 - 517 ) ÷ 517] x 100 = -5.8%
Formula
Percentage change = [(487 - 517) / 517] x 100
Subtract the new number by the original number
487 - 517 = -30
-30 ÷ 517 = -0.058027079303675046
-0.058027079303675046 x 100 = -5.8%