29.75% is the change from 400 to 519
Calculation steps:
[( 519 - 400 ) ÷ 400] x 100 = 29.75%
Formula
Percentage change = [(519 - 400) / 400] x 100
Subtract the new number by the original number
519 - 400 = 119
119 ÷ 400 = 0.2975
0.2975 x 100 = 29.75%