0.81% is the change from 866 to 873
Calculation steps:
[( 873 - 866 ) ÷ 866] x 100 = 0.81%
Formula
Percentage change = [(873 - 866) / 866] x 100
Subtract the new number by the original number
873 - 866 = 7
7 ÷ 866 = 0.008083140877598153
0.008083140877598153 x 100 = 0.81%