Different blocked URLs stats in Google Webmaster Tools

Question

Just want to know I got different blocked URLs stats at Google Webmaster Tools. I blocked entire site for revamp and latest builds implementation. Here are different stats

Under Health tab > Blocked URls > 2,580

Under Health tab > Index Status>Advanced > 1,784

What's the difference between above stats?

Answer 1

In these two cases, blocked URLs refer to blocked URLs by your robots.txt file.

However, if you have different numbers can mean that Google takes time to update data. In a perfect case, these two numbers should be the same.