-33.79% is the change from 663 to 439
Calculation steps:
[( 439 - 663 ) ÷ 663] x 100 = -33.79%
Formula
Percentage change = [(439 - 663) / 663] x 100
Subtract the new number by the original number
439 - 663 = -224
-224 ÷ 663 = -0.3378582202111614
-0.3378582202111614 x 100 = -33.79%