40.9% is the change from 670 to 944
Calculation steps:
[( 944 - 670 ) ÷ 670] x 100 = 40.9%
Formula
Percentage change = [(944 - 670) / 670] x 100
Subtract the new number by the original number
944 - 670 = 274
274 ÷ 670 = 0.408955223880597
0.408955223880597 x 100 = 40.9%