-96.71% is the change from 517 to 17
Calculation steps:
[( 17 - 517 ) ÷ 517] x 100 = -96.71%
Formula
Percentage change = [(17 - 517) / 517] x 100
Subtract the new number by the original number
17 - 517 = -500
-500 ÷ 517 = -0.9671179883945842
-0.9671179883945842 x 100 = -96.71%
Example