-34.27% is the change from 998 to 656
Calculation steps:
[( 656 - 998 ) ÷ 998] x 100 = -34.27%
Formula
Percentage change = [(656 - 998) / 998] x 100
Subtract the new number by the original number
656 - 998 = -342
-342 ÷ 998 = -0.342685370741483
-0.342685370741483 x 100 = -34.27%