6.78% is the change from 811 to 866
Calculation steps:
[( 866 - 811 ) ÷ 811] x 100 = 6.78%
Formula
Percentage change = [(866 - 811) / 811] x 100
Subtract the new number by the original number
866 - 811 = 55
55 ÷ 811 = 0.06781750924784218
0.06781750924784218 x 100 = 6.78%