-98.46% is the change from 518 to 8
Calculation steps:
[( 8 - 518 ) ÷ 518] x 100 = -98.46%
Formula
Percentage change = [(8 - 518) / 518] x 100
Subtract the new number by the original number
8 - 518 = -510
-510 ÷ 518 = -0.9845559845559846
-0.9845559845559846 x 100 = -98.46%