2355.56% is the change from 9 to 221
Calculation steps:
[( 221 - 9 ) ÷ 9] x 100 = 2355.56%
Formula
Percentage change = [(221 - 9) / 9] x 100
Subtract the new number by the original number
221 - 9 = 212
212 ÷ 9 = 23.555555555555557
23.555555555555557 x 100 = 2355.56%