1909.09% is the change from 11 to 221
Calculation steps:
[( 221 - 11 ) ÷ 11] x 100 = 1909.09%
Formula
Percentage change = [(221 - 11) / 11] x 100
Subtract the new number by the original number
221 - 11 = 210
210 ÷ 11 = 19.09090909090909
19.09090909090909 x 100 = 1909.09%