38.09% is the change from 638 to 881
Calculation steps:
[( 881 - 638 ) ÷ 638] x 100 = 38.09%
Formula
Percentage change = [(881 - 638) / 638] x 100
Subtract the new number by the original number
881 - 638 = 243
243 ÷ 638 = 0.38087774294670845
0.38087774294670845 x 100 = 38.09%