31.82% is the change from 638 to 841
Calculation steps:
[( 841 - 638 ) ÷ 638] x 100 = 31.82%
Formula
Percentage change = [(841 - 638) / 638] x 100
Subtract the new number by the original number
841 - 638 = 203
203 ÷ 638 = 0.3181818181818182
0.3181818181818182 x 100 = 31.82%