67.09% is the change from 398 to 665
Calculation steps:
[( 665 - 398 ) ÷ 398] x 100 = 67.09%
Formula
Percentage change = [(665 - 398) / 398] x 100
Subtract the new number by the original number
665 - 398 = 267
267 ÷ 398 = 0.6708542713567839
0.6708542713567839 x 100 = 67.09%