5.07% is the change from 828 to 870
Calculation steps:
[( 870 - 828 ) ÷ 828] x 100 = 5.07%
Formula
Percentage change = [(870 - 828) / 828] x 100
Subtract the new number by the original number
870 - 828 = 42
42 ÷ 828 = 0.050724637681159424
0.050724637681159424 x 100 = 5.07%