9866.67% is the change from 9 to 897
Calculation steps:
[( 897 - 9 ) ÷ 9] x 100 = 9866.67%
Formula
Percentage change = [(897 - 9) / 9] x 100
Subtract the new number by the original number
897 - 9 = 888
888 ÷ 9 = 98.66666666666667
98.66666666666667 x 100 = 9866.67%