Reload a JS value

I'm working on C # MVC and I'm having the following problem in a View:

I put them in context | I have the following 3 values

Value 1: Editable

Value 2: Editable

Value 3: Value 1 - Value 2 (Not Editable)

I have these 3 values in a table.

               <td class="text-right">
                    <a class="Editable" data-name="Value1" data-type="text" data-pk="@item.Id" data-url="@Url.Action("UpdateValue")" data-emptytext="Editar" data-title="Refresh Value1"
                       data-mode="inline">
                        @item.value1.ToString("n0")
                    </a>
                </td>
                <td class="text-right">
                    <a class="Editable" data-name="Value2" data-type="text" data-pk="@item.Id" data-url="@Url.Action("UpdateValue")" data-emptytext="Editar" data-title="Refresh Value2"
                       data-mode="inline">
                        @item.value2.ToString("n0")
                    </a>
                </td>
                <td class="text-right">
                    @((item.Value1 - @item.Value2).ToString("n0"))
                </td>

Section Scripts in the View :

$('.Editable').editable({
        ajaxOptions: {
            dataType: 'json'
        },
        success: function (response, newValue) {
            if (!response) {
                return "Unknown error!";
            }
            if (response.success == false) {
                return response.msg;
            }
        }
    });
    $('[data-toggle="tooltip"]').tooltip();

And the script on the Controller :

[HttpPost]
    public JsonResult UpdateValue(string name, int pk, int? value)
    {
        if (value == null) return new JsonResult { Data = new { success = false, msg = "You need to enter a Valid value." } };

        var edit = data.Find(pk);
        if (name == "Value1") data.value1 = value;
        if (name == "Value2") data.value2 = value;
        data.Save();
        return new JsonResult { Data = new { success = true } };
    }

To the point, what I want to do is Update the value of the account (Value3: value1 - value2) automatically when one of the other two values (value1 OR value2) is edited, without reloading the entire site again. Only the value of the account (value3).

Thanks for the space, I am available for any questions.