49.32% is the change from 663 to 990
Calculation steps:
[( 990 - 663 ) ÷ 663] x 100 = 49.32%
Formula
Percentage change = [(990 - 663) / 663] x 100
Subtract the new number by the original number
990 - 663 = 327
327 ÷ 663 = 0.49321266968325794
0.49321266968325794 x 100 = 49.32%