Input tax credit wrongly calculated on submitting 3gb august

Dear Sir,

I have  sumbited 3GB for the month of August 17. As per  my calculation excess credit liablity is of Rs. 1,52,269.  But after submiting the 3GB GST portan shown me payable of Rs.51,472.  Give me the clarification on this.

Thanks

Pravin

9867137021