2.51% is the change from 838 to 859
Calculation steps:
[( 859 - 838 ) ÷ 838] x 100 = 2.51%
Formula
Percentage change = [(859 - 838) / 838] x 100
Subtract the new number by the original number
859 - 838 = 21
21 ÷ 838 = 0.025059665871121718
0.025059665871121718 x 100 = 2.51%