Is it permissible to add profit without manager's knowledge?

Detail: For example, a salesman makes a sales invoice of SAR-2,600/- and gets the cash from the customer & then he destroys the invoice and evidence then makes a new Invoice of SAR-2,400 and keeps SAR-200 for himself and shows his manager the Invoice of SAR-2,400/- and then gives the money to his manager. Is this permissible in Islam. What is this called bribery, stealing, cheating etc.