This is how you change the order in the meta tag line.
1. Click the Edit HTML under the Design tab in your Blogger account.
2. Download the template.
3. Replace the code
<title><data:blog.pageTitle/></title>
with the following code
<b:if cond='data:blog.pageType == "item"'>
<title><data:blog.pageName/> | <data:blog.title/></title>
<b:else/><title><data:blog.pageTitle/></title>
</b:if> 4. Save the template as a new file (just in case).5. Upload your new template.
6. Done!
Thanks to: Blogspottutorial