how to display the percentage "%" of an ongoing process using UpdateProgress in asp.net webpage

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C#

ASP.NET

As of now i'm displaying the "Please wait.." message when i onclick of btnsave button.. In btnsave_onclick event as per the requirement im calling the multiple stored procedures to save the data in various tables. during this process rather displaying please wait i want to display the percentage or percentage along with message.

<asp:UpdateProgress ID="UpdtProgressProcess" runat="server" AssociatedUpdatePanelID="UpdatePanelDayEnd" DisplayAfter="5" >
          <ProgressTemplate>
          <img src="../images/round_rotate2.gif" alt="" style="width:18px;height:18px; text-align:center" />
          <span class="bigred">Please Wait...</span>
          </ProgressTemplate>
          </asp:UpdateProgress>