The circle graph shows the number of students at Rockford College who are enrolled in various majors. Find the portion of students who are history majors.

Business 3600
Computer Sci 1900
Science 1100
English 2200
History 900
Social Sci 2300

To find the portion of students who are history majors, we need to calculate the percentage of students in the history major out of the total number of students.

Total number of students = Business + Computer Sci + Science + English + History + Social Sci

Total number of students = 3600 + 1900 + 1100 + 2200 + 900 + 2300

Total number of students = 10100

Percentage of students in history major = (Number of history majors / Total number of students) * 100

Percentage of students in history major = (900 / 10100) * 100

Percentage of students in history major = 0.0891 * 100

Percentage of students in history major = 8.91%

Therefore, the portion of students who are history majors is 8.91%.