Of the nation’s 20 top newspapers, the Chronicle has suffered the largest percentage circulation loss in the past four years, an analysis by E&P of ABC figures shows. Between September 2003 and September 2007, the Chronicle’s daily circulation fell by 28.8 percent or 147,406 copies. The current figure is 365,234. In terms of percentages, the second biggest loser was the LA Times at 20.2 percent. The Times lost the most copies per day (201,133) and second was the Chron.