Export data table to excel sheet with number format

i need to export data set

 DataSet ds = new DataSet("tabless");
    ds.Tables.Add(table01);
    ds.Tables.Add(table02);
    ds.Tables.Add(table03);

contains 3 data table each one of them is

    table01.Columns.Add("Branch",typeof(string));
    table01.Columns.Add("Today", typeof(double));
    table01.Columns.Add("MTD",typeof(double));
    table01.Columns.Add("LM",typeof(double));
    table01.Columns.Add("Differ",typeof(double),"LM-MTD");
    table01.Columns.Add("YTD",typeof(double)); 

soo in need to export them to excel sheet with number format and comma separator like when value = -200000 will be(200,000) with red color and value 300000 will be 300,000 and each table in work sheet for more info check the below photo http://ift.tt/1addKB1