I just want to create several new columns with the follwing formula:
PBI_Feb% = HR[WorkingTime_Feb]/HR[01.02.2018]*100
For March it should be: PBI_March% = HR[WorkingTime_March]/HR[01.03.2018]*100
But it is not working. There is always an error which you can see above...
Please translate the error message into English.
Besides, please provide some dummy data to illustrate your problem and desired result.
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