8.34% is the change from 815 to 883
Calculation steps:
[( 883 - 815 ) ÷ 815] x 100 = 8.34%
Formula
Percentage change = [(883 - 815) / 815] x 100
Subtract the new number by the original number
883 - 815 = 68
68 ÷ 815 = 0.0834355828220859
0.0834355828220859 x 100 = 8.34%