-99.03% is the change from 518 to 5
Calculation steps:
[( 5 - 518 ) ÷ 518] x 100 = -99.03%
Formula
Percentage change = [(5 - 518) / 518] x 100
Subtract the new number by the original number
5 - 518 = -513
-513 ÷ 518 = -0.9903474903474904
-0.9903474903474904 x 100 = -99.03%