4.57% is the change from 832 to 870
Calculation steps:
[( 870 - 832 ) ÷ 832] x 100 = 4.57%
Formula
Percentage change = [(870 - 832) / 832] x 100
Subtract the new number by the original number
870 - 832 = 38
38 ÷ 832 = 0.04567307692307692
0.04567307692307692 x 100 = 4.57%