Hey Omkar,
Firstly, your grades will be an issue here. 55% is really low. So, you would need to create an alibi to why it is low. (the entrepreneurship experience can help here)
You have a good amount of extracurricular activities but it won't be considered valuable by schools until you can show that you created some positive impact via it - on yourself or on your surroundings.
The fact that you have entrepreneurial experience will be very much appreciated. Talk about the major accomplishments undertaken here.
The other work experience you had in Finance can be a differentiating factor. You need to talk about the work you have done, projects you have been a part of, how it made you realise that this is the degree you want to go for.
Lastly, 690 is a pretty good score and top schools can be targeted.
So, I would say that you have a good shot at most German and French schools but your GPA would a big issue, but it can be compensated via a strong application.
Some schools worth targeting would be HEC (Dream).....ESSEC, ESCP, ESMT (Competetive)......Grenoble, EDHEC, EBS (Safe)
In the end, it will all depend on how you showcase it in your application.
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