2.1% is the change from 857 to 875
Calculation steps:
[( 875 - 857 ) ÷ 857] x 100 = 2.1%
Formula
Percentage change = [(875 - 857) / 857] x 100
Subtract the new number by the original number
875 - 857 = 18
18 ÷ 857 = 0.021003500583430573
0.021003500583430573 x 100 = 2.1%