37.62% is the change from 638 to 878
Calculation steps:
[( 878 - 638 ) ÷ 638] x 100 = 37.62%
Formula
Percentage change = [(878 - 638) / 638] x 100
Subtract the new number by the original number
878 - 638 = 240
240 ÷ 638 = 0.3761755485893417
0.3761755485893417 x 100 = 37.62%