-68.84% is the change from 998 to 311
Calculation steps:
[( 311 - 998 ) ÷ 998] x 100 = -68.84%
Formula
Percentage change = [(311 - 998) / 998] x 100
Subtract the new number by the original number
311 - 998 = -687
-687 ÷ 998 = -0.688376753507014
-0.688376753507014 x 100 = -68.84%