-99.03% is the change from 517 to 5
Calculation steps:
[( 5 - 517 ) ÷ 517] x 100 = -99.03%
Formula
Percentage change = [(5 - 517) / 517] x 100
Subtract the new number by the original number
5 - 517 = -512
-512 ÷ 517 = -0.9903288201160542
-0.9903288201160542 x 100 = -99.03%