C# microsoft.offfice.interop.excel.chart Y轴百分比?

Axis axisY = (Axis)m_Chart.Axes(XlAxisType.xlValue, XlAxisGroup.xlPrimary);
axisY.MaximumScale = 1;
axisY.MinimumScale = 0;
//该如何设置Y轴显示成百分比？？？