-33.37% is the change from 998 to 665
Calculation steps:
[( 665 - 998 ) ÷ 998] x 100 = -33.37%
Formula
Percentage change = [(665 - 998) / 998] x 100
Subtract the new number by the original number
665 - 998 = -333
-333 ÷ 998 = -0.3336673346693387
-0.3336673346693387 x 100 = -33.37%