63.13% is the change from 396 to 646
Calculation steps:
[( 646 - 396 ) ÷ 396] x 100 = 63.13%
Formula
Percentage change = [(646 - 396) / 396] x 100
Subtract the new number by the original number
646 - 396 = 250
250 ÷ 396 = 0.6313131313131313
0.6313131313131313 x 100 = 63.13%