The table below shows the number of students who participate in sports and/or clubs at a high school.
Student Participation
| Plays Sports | Does Not Play Sports | |
|---|---|---|
| In a Club | 40 | 20 |
| Not in a Club | 30 | 10 |
To the nearest whole percent, what is the positive difference between the percentage of students who play sports and are in a club, and the percentage of students who are in a club and play sports?
