5.03% is the change from 815 to 856
Calculation steps:
[( 856 - 815 ) ÷ 815] x 100 = 5.03%
Formula
Percentage change = [(856 - 815) / 815] x 100
Subtract the new number by the original number
856 - 815 = 41
41 ÷ 815 = 0.05030674846625767
0.05030674846625767 x 100 = 5.03%