97.99% is the change from 398 to 788
Calculation steps:
[( 788 - 398 ) ÷ 398] x 100 = 97.99%
Formula
Percentage change = [(788 - 398) / 398] x 100
Subtract the new number by the original number
788 - 398 = 390
390 ÷ 398 = 0.9798994974874372
0.9798994974874372 x 100 = 97.99%