69.1% is the change from 398 to 673
Calculation steps:
[( 673 - 398 ) ÷ 398] x 100 = 69.1%
Formula
Percentage change = [(673 - 398) / 398] x 100
Subtract the new number by the original number
673 - 398 = 275
275 ÷ 398 = 0.6909547738693468
0.6909547738693468 x 100 = 69.1%