81.25% is the change from 352 to 638
Calculation steps:
[( 638 - 352 ) ÷ 352] x 100 = 81.25%
Formula
Percentage change = [(638 - 352) / 352] x 100
Subtract the new number by the original number
638 - 352 = 286
286 ÷ 352 = 0.8125
0.8125 x 100 = 81.25%