The answer is 16.66%.
There are two months that begin with A: April and August.
There is a total of 12 months.
Hence: 2/12 = 1/6 = 0.1666 (16.66%).
Use this free online Percentage Calculator tool to calculate percentages easily.
When we say "Percent" we are really saying "per 100". One percent (1%) means 1 per 100.
So, because "Percent" means "per 100" think: "this should be divided by 100"
To practice working with percentage calculations, try to solve the set of problems from the following sources below:
www.mathgoodies.com
www.math-drills.com
www.math-aids.com
www.mathworksheets4kids.com