5.17% is the change from 813 to 855
Calculation steps:
[( 855 - 813 ) ÷ 813] x 100 = 5.17%
Formula
Percentage change = [(855 - 813) / 813] x 100
Subtract the new number by the original number
855 - 813 = 42
42 ÷ 813 = 0.05166051660516605
0.05166051660516605 x 100 = 5.17%