The given table shows the number of boys and girls studying in the four streams in college X. The number of girls studying Arts is greater than boys studying Commerce by ________.
| Stream | Boys | Girls |
| Medical | 40 | 80 |
| Engineering | 90 | 40 |
| Commerce | 80 | 30 |
| Arts | 40 | 90 |
1
12.50%
2
17.50%
3
7.50%
4
22.50%