Calculating percentage in Pivot Table

Hi,
I have a problem with my pivot table. I need a new column next to 2018 column that calculates the percentage growth of 2018 over 2017.
I'm new to the pivot tables please help me with this as it's driving me crazy.

I have attached the excel sheet.

Update : I have asked the same question on mrexcel forum with the same subject and I've alerted them.

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Originally Posted by stasinek

Hello,
There are many ways. I showed you one using auxiliary columns. This trend is a computational field in the pivot table (2018 / 2017-1).

Thank You Very Much! It worked!!

I've asked the same question on mrExcel.
I can't post the link because I'm below 10 posts

type out the other URL. Do not try to copy and paste.