There are 600 students at Sunnybrook Middle School, and 120 of them are left-handed. What percent of the students are left-handed?

I wrote it out for you

Above answer is correct, percentages are usually involve dividing so 120 would be divided by 600 because it's a ratio of every 120/600 so 120 students are left handed out of 600, so divide that to get a percent or decimal of. 2 then put a place holder 0 to get 20%