Begin quote; Google response to: how much equity was lost in 2007 thru 2009 in America?
Between 2007 and early 2009, American households lost an estimated $16 trillion in net worth. This loss included a 51.5% decline in the value of stock market equity and a 26% decline in the value of real estate holdings, according to the St. Louis Fed. One-quarter of households lost at least 75% of their net worth, and more than half lost at least 25%, says Britannica.