Hi Nikita,
Follow the below steps:
1. Select the dimension sales and subcategory to show the transition in the year 2012-2013
2. Put the years in the filter and select the years wanted.
3. Select the measure again and select different marks.
In above step 2 and 3 select 1 as line and other as circle marks.
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4. Now make a dual axis graph to form the dumbbell chart.
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Hope it helps you.