-33.23% is the change from 996 to 665
Calculation steps:
[( 665 - 996 ) ÷ 996] x 100 = -33.23%
Formula
Percentage change = [(665 - 996) / 996] x 100
Subtract the new number by the original number
665 - 996 = -331
-331 ÷ 996 = -0.33232931726907633
-0.33232931726907633 x 100 = -33.23%