The table below show the pounds of candy a company sold in the months leading up to October.
| Month | Pounds of Candy Sold |
| June | 114 |
| July | 126 |
| August | 150 |
| September | 148 |
| 538 |
In October they sold 3 times as many pounds of candy as they did in the previous 4 months combined. How many more pounds did they sell in October than were sold in the previous 4 months?