-19.15% is the change from 517 to 418
Calculation steps:
[( 418 - 517 ) ÷ 517] x 100 = -19.15%
Formula
Percentage change = [(418 - 517) / 517] x 100
Subtract the new number by the original number
418 - 517 = -99
-99 ÷ 517 = -0.19148936170212766
-0.19148936170212766 x 100 = -19.15%