49.5% is the change from 398 to 595
Calculation steps:
[( 595 - 398 ) ÷ 398] x 100 = 49.5%
Formula
Percentage change = [(595 - 398) / 398] x 100
Subtract the new number by the original number
595 - 398 = 197
197 ÷ 398 = 0.4949748743718593
0.4949748743718593 x 100 = 49.5%