40.72% is the change from 668 to 940
Calculation steps:
[( 940 - 668 ) ÷ 668] x 100 = 40.72%
Formula
Percentage change = [(940 - 668) / 668] x 100
Subtract the new number by the original number
940 - 668 = 272
272 ÷ 668 = 0.40718562874251496
0.40718562874251496 x 100 = 40.72%