48.5% is the change from 668 to 992
Calculation steps:
[( 992 - 668 ) ÷ 668] x 100 = 48.5%
Formula
Percentage change = [(992 - 668) / 668] x 100
Subtract the new number by the original number
992 - 668 = 324
324 ÷ 668 = 0.48502994011976047
0.48502994011976047 x 100 = 48.5%