70.1% is the change from 398 to 677
Calculation steps:
[( 677 - 398 ) ÷ 398] x 100 = 70.1%
Formula
Percentage change = [(677 - 398) / 398] x 100
Subtract the new number by the original number
677 - 398 = 279
279 ÷ 398 = 0.7010050251256281
0.7010050251256281 x 100 = 70.1%