34.93% is the change from 670 to 904
Calculation steps:
[( 904 - 670 ) ÷ 670] x 100 = 34.93%
Formula
Percentage change = [(904 - 670) / 670] x 100
Subtract the new number by the original number
904 - 670 = 234
234 ÷ 670 = 0.3492537313432836
0.3492537313432836 x 100 = 34.93%