It will throw the format exception when get the cell value which set the cell format is percent.
And I try to get the cell value like this code.
```
ClosedXML.Excel.XLWorkbook wb = new ClosedXML.Excel.XLWorkbook(new FileStream(@"New Microsoft Excel Test.xlsx", FileMode.OpenOrCreate));
var cell = wb.Worksheet("Sheet1").Cell("A1");
var value = cell.Value; //It will throw the format exception
```
And I try to get the cell value like this code.
```
ClosedXML.Excel.XLWorkbook wb = new ClosedXML.Excel.XLWorkbook(new FileStream(@"New Microsoft Excel Test.xlsx", FileMode.OpenOrCreate));
var cell = wb.Worksheet("Sheet1").Cell("A1");
var value = cell.Value; //It will throw the format exception
```