181.82% is the change from 11 to 31
Calculation steps:
[( 31 - 11 ) ÷ 11] x 100 = 181.82%
Formula
Percentage change = [(31 - 11) / 11] x 100
Subtract the new number by the original number
31 - 11 = 20
20 ÷ 11 = 1.8181818181818181
1.8181818181818181 x 100 = 181.82%