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I've wrangled my raw data into the following pivot, now I need to insert 2 new columns which represents difference for "avg" and "vol" values 2016 over 2014 but am stuck. New to coding,

thx!

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Graham
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stewart83
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    Hi, welcome to Stack Overflow. Please read [How to create a MCVE](https://stackoverflow.com/help/mcve); you'll get more help if you provide some code for others to use to get started. – Evan Nov 15 '18 at 23:14
  • Also, is that pandas or Excel? – Evan Nov 15 '18 at 23:15
  • Possible duplicate of [Adding new column to existing DataFrame in Python pandas](https://stackoverflow.com/questions/12555323/adding-new-column-to-existing-dataframe-in-python-pandas) – Evan Nov 15 '18 at 23:20

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