Pandas percentage change using group by

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Track title: CC M Beethoven - Piano Sonata No 3 in C 3

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Chapters
00:00 Question
01:09 Accepted answer (Score 9)
01:41 Answer 2 (Score 3)
02:13 Thank you

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Full question
https://stackoverflow.com/questions/6762...

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Tags
#python #pandas #dataframe

#avk47