82.29% is the change from 350 to 638
Calculation steps:
[( 638 - 350 ) ÷ 350] x 100 = 82.29%
Formula
Percentage change = [(638 - 350) / 350] x 100
Subtract the new number by the original number
638 - 350 = 288
288 ÷ 350 = 0.8228571428571428
0.8228571428571428 x 100 = 82.29%