-9.09% is the change from 517 to 470
Calculation steps:
[( 470 - 517 ) ÷ 517] x 100 = -9.09%
Formula
Percentage change = [(470 - 517) / 517] x 100
Subtract the new number by the original number
470 - 517 = -47
-47 ÷ 517 = -0.09090909090909091
-0.09090909090909091 x 100 = -9.09%