1086.3% is the change from 73 to 866
Calculation steps:
[( 866 - 73 ) ÷ 73] x 100 = 1086.3%
Formula
Percentage change = [(866 - 73) / 73] x 100
Subtract the new number by the original number
866 - 73 = 793
793 ÷ 73 = 10.863013698630137
10.863013698630137 x 100 = 1086.3%