-76.85% is the change from 998 to 231
Calculation steps:
[( 231 - 998 ) ÷ 998] x 100 = -76.85%
Formula
Percentage change = [(231 - 998) / 998] x 100
Subtract the new number by the original number
231 - 998 = -767
-767 ÷ 998 = -0.7685370741482966
-0.7685370741482966 x 100 = -76.85%