Value is displaying only after . not whole in mvc

Question

@Model.BillCharge value is $200.12 but after render value is displaying only 12 on page.I found solution but I am worry about why and how.

 

<div class="col-md-4 col-sm-4 col-xs-12">

<span class="labelBlue">

@Html.Label("Billed Charges :")

</span>

@Html.Label(@Model.BillCharge == null ? "" : @Model.BillCharge)

</div>