28.25% is the change from 400 to 513
Calculation steps:
[( 513 - 400 ) ÷ 400] x 100 = 28.25%
Formula
Percentage change = [(513 - 400) / 400] x 100
Subtract the new number by the original number
513 - 400 = 113
113 ÷ 400 = 0.2825
0.2825 x 100 = 28.25%