C# Converting a Percentage Value read from Excel to a Double

I am reading a percentage value from an excel file, and I need this value to be of type double.

I am using xlWorkSheet.get_Range("A1", "A1")Value2 to retrieve the value. Casting / converting to a double isn't working.

How can I convert this percentage to a double?

If your input is 87.5%, you'll need to get rid of the % sign first:

var inputText = "87.5%";
var doubleValue = Double.Parse(inputText.Replace("%", ""));