using System;

using System.Text.RegularExpressions;

​

public class Program

{

    public static void Main()

    {

        string input = "Valuta dada 60 dana odob,,,rava se 40 % rabata za plaćanje unutar 30 dana";

        //input = "Odgoda 44 dana 85%, 65 dana net";

        Match match = Regex.Match(input, @"^[\D]+([\d]+)\s+[\D]+([\d]+)\s*%[\D]+([\d]+)[\D]*$", RegexOptions.IgnoreCase);

        if (match.Success && match.Groups.Count == 4)

        {

            string prv = match.Groups[1].Value;

            string dru = match.Groups[2].Value;

            string tre = match.Groups[3].Value;

            Console.WriteLine(prv + " " + dru + " " + tre);

        }

    }

}