A survey at your school found that 842 of 989 students have a cell phone. What percent of the students has a cell phone? Round to the nearest hundredth where necessary.

To find the percent of students that have a cell phone, divide the number of students with a cell phone by the total number of students: 842 students / 989 students = <<842/989=0.8511553838289453>>0.85.

Multiply by 100 to find the percentage: 0.85 * 100% = 85%. Answer: \boxed{85}.