69.19% is the change from 396 to 670
Calculation steps:
[( 670 - 396 ) ÷ 396] x 100 = 69.19%
Formula
Percentage change = [(670 - 396) / 396] x 100
Subtract the new number by the original number
670 - 396 = 274
274 ÷ 396 = 0.6919191919191919
0.6919191919191919 x 100 = 69.19%