310.31% is the change from 97 to 398
Calculation steps:
[( 398 - 97 ) ÷ 97] x 100 = 310.31%
Formula
Percentage change = [(398 - 97) / 97] x 100
Subtract the new number by the original number
398 - 97 = 301
301 ÷ 97 = 3.1030927835051547
3.1030927835051547 x 100 = 310.31%