As per the official regulation of Vidyasagar University there is no mention of the honors degree criteria. But in general , 40% in aggregate is ok to award Honors degree in Calcutta University, Kalyani University etc. So you can target it to be the minimum criteria and try to improve your percentage if possible.

For Vidyasagar University Examination regulation for BA/BSC/BCOM under CBCS system follow the link provided below:

http://www.vidyasagar.ac.in/Downloads/ShowPdf.aspx?file=/policies_regulations/UG_CBCS_Regulations_06122019.pdf

I hope this answer helps. All the very best for your future endeavors!