calculate difference of columns with different amount

Hello,
I would like to calculate the difference of columns and percent deviation to the first column. for example column A has 6 rows is basis column B has the same size. column C and so on. The size of columns should be variable. Should I do it with a loop and a table to variable (column B, C etc.) so I choose the header used for the calculation. column B - column A, next loopstep column C - column A …
Thanks in advance!
Oliver

Hi @HofmannO

Welcome to KNIME Forum. I think for this you don’t a loop. Go for the Math Formula (Multi Column) node. Configure it like this

gr. Hans

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Thank you so much. That is a great feature! Without additional loops variables. The knime node incudes everything.

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