8.39% is the change from 799 to 866
Calculation steps:
[( 866 - 799 ) ÷ 799] x 100 = 8.39%
Formula
Percentage change = [(866 - 799) / 799] x 100
Subtract the new number by the original number
866 - 799 = 67
67 ÷ 799 = 0.08385481852315395
0.08385481852315395 x 100 = 8.39%