9911.11% is the change from 9 to 901
Calculation steps:
[( 901 - 9 ) ÷ 9] x 100 = 9911.11%
Formula
Percentage change = [(901 - 9) / 9] x 100
Subtract the new number by the original number
901 - 9 = 892
892 ÷ 9 = 99.11111111111111
99.11111111111111 x 100 = 9911.11%