How to change string/text data type to double/decimal throughout a build?

Hi all!

This the following scenario on a build:

I have a dataset D1 pulling in data from a SharePoint folder with several CSV files. One of the columns in the D1 dataset has decimal numbers which contains a % symbol. Dataiku reads it as a string/text data type.

If I change the data type to double/decimal - all the data in that column won't show. I also added a cleaning recipe to take out the % symbol and tried to change the data type to double/decimal and I still loose the data in that column.

I have to switch everything back to String/text in the data type, so all follows through.

Can I change the data type in the schema at the end of the build or can someone guide me on this?

Thanks!

Operating system used: Windows