800.91% is the change from 110 to 991
Calculation steps:
[( 991 - 110 ) ÷ 110] x 100 = 800.91%
Formula
Percentage change = [(991 - 110) / 110] x 100
Subtract the new number by the original number
991 - 110 = 881
881 ÷ 110 = 8.00909090909091
8.00909090909091 x 100 = 800.91%