Calculating a percentage for a customer level in AspDotNetStorefront

Question

I am using AspDotNetStoreFront to run a site. As part of the code if a product is on sale it shows a full price, sale price and a percentage of the saving. The code to calculate this percentage is

 if (m_VATOn)
    {
        vatPrice = TaxMultiplier * Price;
        vatSalePrice = TaxMultiplier * SalePrice;
        vatExtPrice = TaxMultiplier * ExtPrice;
    }
    int saving = (int)(100*((vatPrice - vatSalePrice) / vatPrice));

There is also a code for some customers who are in a customer level. Rather than a percentage they get shown a regular price and then at the end their discounted price (they get automatically assigned a blanket discount). But I am trying to get the percentage, like a sale product above, to be shown so that they have

Regular Price Customer Level Price Percentage saved

The formula I think to calculate this is Price-SalePrice/Customer Level Price. But for the life of me I cannot seem to copy and adapt this line to calculate that

int saving = (int)(100*((vatPrice - vatSalePrice) / vatPrice));

Other code that displays this is below. If anybody can help with the formula I would be happy!

decimal LevelDiscountPct = 0;
        if (ThisCustomer.CustomerLevelID != 0)
        {
            LevelDiscountPct = Prices.LevelDiscount(ThisCustomer.CustomerLevelID, VariantID);
        }
        if (LevelDiscountPct == 0)
        {
            LevelDiscountPct = ThisCustomer.LevelDiscountPct;
        }


        if (ThisCustomer.CustomerLevelID == 0 || (LevelDiscountPct == 0.0M && ExtPrice == 0.0M))
        {
            if (ThisCustomer.CustomerLevelID == 0 && AppLogic.AppConfigBool("WholesaleOnlySite"))
            {
                results.Append(" ");
            }
            else
            {
                // show consumer pricing (e.g. level 0):
                String PriceString = "<span class=\"RegularPrice\">" + Localization.CurrencyStringForDisplayWithoutExchangeRate(vatPrice, ThisCustomer.CurrencySetting) + "</span>";
                if (SalePrice == Decimal.Zero || ThisCustomer.CustomerLevelID > 0)
                {
                    PriceString = "<span class=\"RegularPrice\">" + CommonLogic.IIF(Showpricelabel, AppLogic.GetString("showproduct.aspx.26", ThisCustomer.SkinID, ThisCustomer.LocaleSetting), "") + NCCurrencyDisplay(vatPrice, ThisCustomer.CurrencySetting) + "</span>";
                }
                else
                {
                    PriceString = "<span class=\"SalePrice\" >" + SalesPromptName + "&nbsp;" + NCCurrencyDisplay(vatSalePrice, ThisCustomer.CurrencySetting) + "</span>";
                    PriceString += "<span class=\"Saving\" >&nbsp;Saving&nbsp;" + saving.ToString() + "&#37;</span>";
                }

                results.Append(PriceString);

                if (m_VATEnabled)
                {
                    results.Append("&nbsp;" + CommonLogic.IIF(m_VATOn, AppLogic.GetString("setvatsetting.aspx.6", ThisCustomer.SkinID, ThisCustomer.LocaleSetting), AppLogic.GetString("setvatsetting.aspx.7", ThisCustomer.SkinID, ThisCustomer.LocaleSetting)));
                }
            }
        }
        else
        {
            decimal CustLvlPrice = CommonLogic.IIF(ExtPrice == 0.0M, Price, ExtPrice);
            if (LevelDiscountPct != 0.0M && (ExtPrice == 0.0M || (ExtPrice > 0.0M && ThisCustomer.DiscountExtendedPrices)))
            {
                CustLvlPrice = CustLvlPrice * (decimal)(1.00M - (LevelDiscountPct / 100.0M)) * CommonLogic.IIF(m_VATOn, TaxMultiplier, 1.0M);
            }

            // show level pricing:
            String PriceString = "<span class=\"RegularPrice\" >" + CommonLogic.IIF(Showpricelabel, AppLogic.GetString("showproduct.aspx.27", ThisCustomer.SkinID, ThisCustomer.LocaleSetting) + "&nbsp;", "") + NCCurrencyDisplay(vatPrice, ThisCustomer.CurrencySetting) + "</span> ";
            // 10.05.14 Fix the sale price 0.00 issue
            if (SalePrice > Decimal.Zero)
            {
                /* NEW*/   PriceString += "<span class=\"SalePrice\" >" + SalesPromptName + "&nbsp;" + NCCurrencyDisplay(vatSalePrice, ThisCustomer.CurrencySetting) + "</span><br />";

            }
            PriceString += "<br /><span class=\"LevelPrice\" style=\"color:" + AppLogic.AppConfig("OnSaleForTextColor") + "\">" + CommonLogic.IIF(Showpricelabel, ThisCustomer.CustomerLevelName + " " + AppLogic.GetString("showproduct.aspx.26", ThisCustomer.SkinID, ThisCustomer.LocaleSetting) + "&nbsp;", "") + NCCurrencyDisplay(CustLvlPrice, ThisCustomer.CurrencySetting) + "</span>";
            PriceString += "<span class=\"Saving\" >&nbsp;Saving&nbsp;" + practsaving.ToString() + "&#37;</span>";
            PriceString += CommonLogic.IIF(AppLogic.AppConfigBool("MicroPay.ShowPointsWithPrices"), "(" + Points.ToString() + " Points)", "");
            results.Append(PriceString);
            if (m_VATEnabled)
            {
                results.Append("&nbsp;" + CommonLogic.IIF(m_VATOn, AppLogic.GetString("setvatsetting.aspx.6", ThisCustomer.SkinID, ThisCustomer.LocaleSetting), AppLogic.GetString("setvatsetting.aspx.7", ThisCustomer.SkinID, ThisCustomer.LocaleSetting)));
            }
        }
    }

Answer 1

The answer if anyone needs it is

int practsaving = (int)(100*((vatPrice - CustLvlPrice) / vatPrice));