It's quiet tough to get bcom hons with this percentage as with change in stream there will be some disadvantage of 5% (maximum) and  you can get college after 3-4 cut off as frst cut off is always very high i.e.above 90%..
Just hope for the best

Hi Dear, 

your chances are less for getting admission in good college because the colleges are demanding for more than 90% and you have 72% and your maths marks are not the one who will stop you for getting admission in b.com (hons.) your percentage is low as per their requirements 

i hope this information is helpful for you 

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thank you 

good luck