3.33% is the change from 842 to 870
Calculation steps:
[( 870 - 842 ) ÷ 842] x 100 = 3.33%
Formula
Percentage change = [(870 - 842) / 842] x 100
Subtract the new number by the original number
870 - 842 = 28
28 ÷ 842 = 0.0332541567695962
0.0332541567695962 x 100 = 3.33%