using System;

public class Program

{

    public static void Main()

    {

        var price = 5590m;

        var oldPrice = 7590m;

        var percent = Math.Round(100 - (price / oldPrice * 100));

        var roundedPercent = 0m;

        roundedPercent = Math.Round(percent / 10m, System.MidpointRounding.ToEven);

        Console.WriteLine(percent);

        Console.WriteLine(roundedPercent * 10);

    }

}