-17.02% is the change from 517 to 429
Calculation steps:
[( 429 - 517 ) ÷ 517] x 100 = -17.02%
Formula
Percentage change = [(429 - 517) / 517] x 100
Subtract the new number by the original number
429 - 517 = -88
-88 ÷ 517 = -0.1702127659574468
-0.1702127659574468 x 100 = -17.02%