-18.74% is the change from 998 to 811
Calculation steps:
[( 811 - 998 ) ÷ 998] x 100 = -18.74%
Formula
Percentage change = [(811 - 998) / 998] x 100
Subtract the new number by the original number
811 - 998 = -187
-187 ÷ 998 = -0.187374749498998
-0.187374749498998 x 100 = -18.74%