12271.43% is the change from 7 to 866
Calculation steps:
[( 866 - 7 ) ÷ 7] x 100 = 12271.43%
Formula
Percentage change = [(866 - 7) / 7] x 100
Subtract the new number by the original number
866 - 7 = 859
859 ÷ 7 = 122.71428571428571
122.71428571428571 x 100 = 12271.43%