Ok...you seem "ok" with the fact that 50% of a number is HALF of that number, so 50% of 60 is 30. Now, 30% is
less than 50%, isn't it? So, it should seem reasonable that 30% of 60 is going to be
less than 30, I hope. A previous responder explained that 30% is the same thing as 30/100, and 30% of 59.99 would be the same thing as (30/100) * 59.99, or (30/100)*(59.99/1). If you are confused by how to multiply two fractions, then I really am afraid that you need WAY MORE HELP than we can provide in a few posts here.
If you do a search on Google or your other favorite search engine for "lessons on percents and fraction operations" you should find a multitude of online resources which may help you understand.
One resource I have frequently recommended is
http://www.purplemath.com/ You'll find lessons there on lots of different math topics.