38.81% is the change from 670 to 930
Calculation steps:
[( 930 - 670 ) ÷ 670] x 100 = 38.81%
Formula
Percentage change = [(930 - 670) / 670] x 100
Subtract the new number by the original number
930 - 670 = 260
260 ÷ 670 = 0.3880597014925373
0.3880597014925373 x 100 = 38.81%