35.67% is the change from 670 to 909
Calculation steps:
[( 909 - 670 ) ÷ 670] x 100 = 35.67%
Formula
Percentage change = [(909 - 670) / 670] x 100
Subtract the new number by the original number
909 - 670 = 239
239 ÷ 670 = 0.3567164179104478
0.3567164179104478 x 100 = 35.67%