Sports Preference Survey Analysis

In a recent school survey, students were asked which sport they preferred from a list of four options: Basketball, Soccer, Tennis, and Swimming. The results were depicted in the following bar graph:

If 80 total students participated in the survey, and the number of students who preferred Soccer was twice that of Swimming while 10 more students preferred Basketball than Tennis, how many students preferred each sport?

Based on the students' preferences, what percentage of students preferred Soccer?