From the National Association of Realtors in PDF format
The link has a list of prices in various US cities.  
The NE decreased 2.5%, the South decreased 3.7% and the Midwest Decreased 4.2%.  The West increased .4%.
Florida is a bloodbath right now.  We're seeing big declines.  
California is mixes.  San Diego and San Francisco are down while Los Angeles and San Jose are up.  Go figure.
It takes a great deal of downward pressure to move the national number lower.  That means this number is significant.