450% is the change from 2 to 11
Calculation steps:
[( 11 - 2 ) ÷ 2] x 100 = 450%
Formula
Percentage change = [(11 - 2) / 2] x 100
Subtract the new number by the original number
11 - 2 = 9
9 ÷ 2 = 4.5
4.5 x 100 = 450%
Example