President Donald Trump’s wealth saw a major drop in the last year, mainly because some of his properties decreased in value. American business magazine Forbes says Trump’s net worth fell $600 million to $3.1 billion over the past 12 months. His net worth was estimated at $3.7 billion a year ago. Each year Forbes puts together a list of the 400 richest Americans. This year, Trump was number 248 on the list, down from 156 in 2016. According to Forbes, much of Trump’s wealth comes from a group of New York City luxury buildings in and around Manhattan. The magazine said property values in the area have dropped recently.