I'm using an ASP.Net MVC igGrid and i have created the grid like below

@(Html.Infragistics().Grid(this.Model.lstMilestoneDetails).PrimaryKey("intMileStoneNo").AutoCommit(false).AutoGenerateColumns(false).ID("MileStoneGrid").Columns(column =>
{
column.For(x => x.intMileStoneNo).Hidden(true); //MilestoneNo
column.For(x => x.txtDescription).HeaderText("Description"); //Description
column.For(x => x.dtDate).Format("dd-MMM-yyyy").HeaderText("Date").Width("15%");
column.For(x => x.fltPercentage).HeaderText("Percentage"); //Percentage
column.For(x => x.fltAmount).HeaderText("Amount"); //Amount
column.For(x => x.MilestonePercentage).HeaderText("Milestone%");
}).Features(features =>
{
features.Updating().ColumnSettings(cs =>
{
cs.ColumnSetting().ColumnKey("txtDescription").EditorType(ColumnEditorType.Text).Required(true);
cs.ColumnSetting().ColumnKey("dtDate").EditorType(ColumnEditorType.DatePicker).Required(true);
cs.ColumnSetting().ColumnKey("fltPercentage").EditorType(ColumnEditorType.Numeric).DefaultValue(0).Required(true).NumericEditorOptions(opts => opts.MaxValue(100).MinValue(0));
cs.ColumnSetting().ColumnKey("fltAmount").EditorType(ColumnEditorType.Numeric).DefaultValue(0).Required(true);
cs.ColumnSetting().ColumnKey("MilestonePercentage").ReadOnly(true);
});
features.Summaries().ColumnSettings(cs =>
{
cs.ColumnSetting().ColumnKey("fltPercentage").AllowSummaries(true).SummaryOperands(so => { so.SummaryOperand().RowDisplayLabel("Sum").Type(SummaryFunction.Sum).Active(true); });
cs.ColumnSetting().ColumnKey("fltAmount").AllowSummaries(true).SummaryOperands(so => { so.SummaryOperand().RowDisplayLabel("Sum").Type(SummaryFunction.Sum).Active(true); });
});
features.Resizing();
features.ColumnMoving().AddMovingDropdown(false);
features.Sorting().ApplyColumnCss(false);
features.Selection().MultipleSelection(true);
features.RowSelectors().EnableSelectAllForPaging(true).EnableCheckBoxes(true).EnableRowNumbering(false);
features.Paging().PageSize(5).PageSizeDropDownLocation("inpager").AddClientEvent("pageIndexChanged", "fnPagination").AddClientEvent("pageSizeChanged", "fnPageSizeChange");
})
.AutoCommit(true)
.DataBind().Render()
)

I want to calculate a value of cell "Amount" when I change value of "Percentage" and vice versa . I need to change the values either on blur of that particular cell or when the value is changed.

Like When i enter percentage as 15% i want to update the amount value like 15 * some predefined value.

How can I do that? Can you kindly provide it with an example?