The Ravens got their 15th straight home win (16 including playoffs) by defeating the Raiders. Baltimore set a franchise record for points in a game with 55 - improving on the previous record of 48 set against the Detroit Lions on December 13, 2009 - as the team improved to 7-2. Jacoby Jones returned a kickoff for a 105-yard touchdown, making him the first player in league history to have two career kickoff returns of at least 105 yards. Jones had returned a kickoff for 108 yards in Week 6 against the Cowboys.

Based on the above article, answer a question. How many more points in a game did the Ravens score than the previous record?
7