4.77% is the change from 838 to 878
Calculation steps:
[( 878 - 838 ) ÷ 838] x 100 = 4.77%
Formula
Percentage change = [(878 - 838) / 838] x 100
Subtract the new number by the original number
878 - 838 = 40
40 ÷ 838 = 0.0477326968973747
0.0477326968973747 x 100 = 4.77%