1.78% is the change from 842 to 857
Calculation steps:
[( 857 - 842 ) ÷ 842] x 100 = 1.78%
Formula
Percentage change = [(857 - 842) / 842] x 100
Subtract the new number by the original number
857 - 842 = 15
15 ÷ 842 = 0.017814726840855107
0.017814726840855107 x 100 = 1.78%