Do you mean top 20%? Because the top 80% is well, almost everyone. Or the 80th percentile would be the top 20%. I'm not nitpicking, I just took the 80% to mean

Do you mean top 20%? Because the top 80% is well, almost everyone. Or the 80th percentile would be the top 20%. I'm not nitpicking, I just took the 80% to mean 2.7 as well.