Zend certified PHP/Magento developer

How do I pass the password to a net use command which contains % at the end?

I have this command in batch script

net use \192.168.40.40 /user:192.168.40.40Administrator b91A*9AIvPr%

But when it runs I get the error
System error 1326 has occurred.

The user name or password is incorrect.

Because it strips off last % symbol
Putting password in “” doesn’t help either.

I cannot change password for the account. So are there any workaround?