65.75% is the change from 400 to 663
Calculation steps:
[( 663 - 400 ) ÷ 400] x 100 = 65.75%
Formula
Percentage change = [(663 - 400) / 400] x 100
Subtract the new number by the original number
663 - 400 = 263
263 ÷ 400 = 0.6575
0.6575 x 100 = 65.75%