404 Error After Permanent Link Change

Getting 404 Error after I change the Permanent link. I also update the .htaccess file still the error exist.
Previous link was
http://newsview.in/%post_id%

New Link Changed to
http://newsview.in/%category%/post_id/

I search on google but only find the .htaccess file to update, also I try many plugins but nothing happens. Then I find some .htaccess Redirect command but I am new to wordpress and not know much about the .htaccess file.

I also try to disable all the plugins and delete the .htaccess file and again recreate the permanent link but nothing happen.
Can anybody please help me to resolve this issue and give some Redirect command for the .htaccess or any other solution for this problem

My .htaccess file

# BEGIN WordPress
<IfModule mod_rewrite.c>
RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule . /index.php [L]
</IfModule>

# END WordPress