Excel formula to count and sum

[Ironman]

Hello

I'm working with an excel file that starts off with two columns and 1300 rows. Employee ID in A and Salary dollars earned in Column B. The total in column B is, let say $60,000,000.00. This is sorted by column B, desending. I've added a third column that tells me what 5% of the $60mil is (c2), C3 = what 10% of 60mil is, C4 = What 15% is, C5 = What 20% of 60mil is...and so on to what 95% of 60mil is in C20.

What I'm trying to determine is how many employees take up or make up 5% of the total salary (60mil)?, then how many employees take up 10% of the 60 mil, and so on to 95% of the 60mil.

I'm not sure if this is a countif or which direction I should go...any thoughts/suggestions would be great...thanks!!!