Ordering Excel Rows By Particular Column Programatically?

I am trying to order 7 rows in descending order of data from a particular column.
The data in the excel spreadsheet looks like this:

Name---Actual----Budget---Budget%
Name1--$2000-----$5000--------40%
Name2--$5000-----$4000-------110%

I want to order the rows by the 'Budget%' column in descending order.

The Code I have so far is:

Dim objExcel As New Excel.Application
Dim objWorkbook As Excel.Workbook
Dim objSheet As Excel.Worksheet
objExcel.WindowState = Excel.XlWindowState.xlMinimized
objExcel.Visible = False

[Code]...