49.1% is the change from 668 to 996
Calculation steps:
[( 996 - 668 ) ÷ 668] x 100 = 49.1%
Formula
Percentage change = [(996 - 668) / 668] x 100
Subtract the new number by the original number
996 - 668 = 328
328 ÷ 668 = 0.49101796407185627
0.49101796407185627 x 100 = 49.1%