-5.22% is the change from 517 to 490
Calculation steps:
[( 490 - 517 ) ÷ 517] x 100 = -5.22%
Formula
Percentage change = [(490 - 517) / 517] x 100
Subtract the new number by the original number
490 - 517 = -27
-27 ÷ 517 = -0.05222437137330754
-0.05222437137330754 x 100 = -5.22%