-49.92% is the change from 663 to 332
Calculation steps:
[( 332 - 663 ) ÷ 663] x 100 = -49.92%
Formula
Percentage change = [(332 - 663) / 663] x 100
Subtract the new number by the original number
332 - 663 = -331
-331 ÷ 663 = -0.49924585218702866
-0.49924585218702866 x 100 = -49.92%