Firstly, there is math in Economics. It may not teach a new type of math, but there's quite a bit of mathematical application.
Secondly, changing your major is seriously business; don't do it on a whim. The big reason for going to college (grad. school) is to help your career. Think about what type of work you want to do for a living and think about the types of jobs that are available in that field. Go to your school's career center and talk to them about your situation. Work out some of your interests and what you think you'll get from changing your major. They can help you separate the facts from the fiction.
You (your parents) are paying a lot of money for your degree. Take advantage of the career services and academic advisors. Don't be one of those people who's afraid to meet with advisors in person and just floats along, hoping that things will work out. Math and Statistics are pretty good resume-builders though.
It's not real maths though, it's all fairly simple. Not like I would learn doing real maths courses, I could probably do most of it now. All those degrees are pretty much all aimed for the same career, I don't think there are people at my uni doing quantitative degrees who are not trying to get into finance. I don't know what its like in the states, but changing degree here is really simple. Pretty much everyone does the same first year so I literally just book an appointment with the head of the department and it takes maybe 20 minutes if they're willing to take me.
Economics math is mainly basic calculus and statistics; it's the analysis, forecasting and decision-making that's important.
Changing majors is easy in the U.S too. What I meant is that it can have a serious impact on your life and your career. What you choose to study can determine whether or not you get the jobs that you want, so you shouldn't just make a decision on a whim. If you're interested in Finance, then statistics and economics or finance may be good options, but there are a lot of jobs in Finance. I'd talk to someone in the Career Center to narrow down the types of jobs that you want and to figure out what classes are going to help you reach your goals. The actual major is a lot less important than the skills that you develop.