Script to do : Subtraction of multiple column

[#1]

Hi Team,

Need help to  develop one script to do subtraction of multiple column , column name and count is variable,

can change based on analysis,

Need to populate column delta with differences all the value from same row,

sample data as below

expected output:

[#2 · Accepted solution]

Hi Jim,

Thank you for the help,

solution working fine :)