46.5% is the change from 400 to 586
Calculation steps:
[( 586 - 400 ) ÷ 400] x 100 = 46.5%
Formula
Percentage change = [(586 - 400) / 400] x 100
Subtract the new number by the original number
586 - 400 = 186
186 ÷ 400 = 0.465
0.465 x 100 = 46.5%
Example