Please explain. Physics question.?

Many people mistakenly believe that the astronauts orbiting the earth are "above gravity." Calculate the acceleration due to gravity, g, for space shuttle territory, 270 kilometers above the earth's surface. Earth's m is 6 multiplied by 10^24 kg, and its radius is 6.38 multiplied by 106 m (6380 km). Your answer is what percentage of 9.8 m/s^2?