2111.11% is the change from 9 to 199
Calculation steps:
[( 199 - 9 ) ÷ 9] x 100 = 2111.11%
Formula
Percentage change = [(199 - 9) / 9] x 100
Subtract the new number by the original number
199 - 9 = 190
190 ÷ 9 = 21.11111111111111
21.11111111111111 x 100 = 2111.11%