How to find the Percentage change compared to Previous Month in Tableau

Identifying and highlighting the percentage difference of a measure compared to an earlier period can come handy in various business cases. We may want to compare the Sales or Profit over a region or category of a dimension over every month or year to highlight the percentage difference. We cannot highlight using a table calculation, but this can be done by using a Tableau calculated field which can enable us to clearly distinguish a field by using the Marks color for values which meet the criterion.

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For example if we want to highlight the values of Sales for the year 2011 for every State where we had a 20% or more change compared to the previous month, we can do it like below.