69.6% is the change from 398 to 675
Calculation steps:
[( 675 - 398 ) ÷ 398] x 100 = 69.6%
Formula
Percentage change = [(675 - 398) / 398] x 100
Subtract the new number by the original number
675 - 398 = 277
277 ÷ 398 = 0.6959798994974874
0.6959798994974874 x 100 = 69.6%