The Oxford Circle/Castor-Tacony/Wissinoming-Mayfair swath of the Lower Northeast, formerly one of the city's most stable sections, had the greatest increase in the percentage of people living in poverty over the last decade — up a whopping 110 percent since 1999, according to U.S. Census Bureau data. "What you are seeing is fixed incomes and declining wages" coming together, said David Bartelt of Temple's Department of Geography and Urban Studies. He called it "a recipe for sliding down further."