To ignore all numbers stored as text, you need to open the Data tab and select the Text to Columns option. Then, select the Delimited option from the Convert Text to Columns wizard.

Microsoft Excel depends on data that’s stored correctly. If you receive text values that should be real numbers, use one of these methods to get you back to the real work.

To fix DataFormat.Error, We couldn't convert to Number, when working with data in Power Query, whether in Excel or Power BI use these solutions ...

Excel has historically been about organizing text and numbers, but for several years, Microsoft has been working to boost the number of data types the application supports.