Study the following table and answer the question.
The table shows the number of people who visited hill stations A and B in the years from 2011 to 2013.
| Year | A | B |
| 2011 | 777 | 566 |
| 2012 | 675 | 289 |
| 2013 | 470 | 978 |
What is the absolute difference between the number of people who visited hill station A in the year 2011 to the number of people who visited hill station B in the same year?