500% is the change from 11 to 66
Calculation steps:
[( 66 - 11 ) ÷ 11] x 100 = 500%
Formula
Percentage change = [(66 - 11) / 11] x 100
Subtract the new number by the original number
66 - 11 = 55
55 ÷ 11 = 5
5 x 100 = 500%
Example