172.73% is the change from 11 to 30
Calculation steps:
[( 30 - 11 ) ÷ 11] x 100 = 172.73%
Formula
Percentage change = [(30 - 11) / 11] x 100
Subtract the new number by the original number
30 - 11 = 19
19 ÷ 11 = 1.7272727272727273
1.7272727272727273 x 100 = 172.73%