-49.1% is the change from 998 to 508
Calculation steps:
[( 508 - 998 ) ÷ 998] x 100 = -49.1%
Formula
Percentage change = [(508 - 998) / 998] x 100
Subtract the new number by the original number
508 - 998 = -490
-490 ÷ 998 = -0.4909819639278557
-0.4909819639278557 x 100 = -49.1%