1911.11% is the change from 9 to 181
Calculation steps:
[( 181 - 9 ) ÷ 9] x 100 = 1911.11%
Formula
Percentage change = [(181 - 9) / 9] x 100
Subtract the new number by the original number
181 - 9 = 172
172 ÷ 9 = 19.11111111111111
19.11111111111111 x 100 = 1911.11%