Not since the Depression has a larger share of Americans owed more on their homes than they are worth.

Not since the Depression has a larger share of Americans owed more on their homes than they are worth. With the collapse of the housing boom, nearly 8.8 million homeowners, or 10.3 percent of the total, are underwater. That is more than double the percentage just a year ago, according to a new estimate of the damage by Moody’s Economy.com.