View button that links to current node
The field Content: Link allows you to enter Text to display. 


Add a new Field Content: Link 
Under Text to display enter Bestel nu


Easy :)

For more complex changes you can use the "Rewrite the output of this field" option on the "Content: Link" field. It's more reliable to use this field than Path.  

You can use "Global: Custom text" field to construct some output (also "Rewrite the output of this field") using the tokens for the fields listed above it, but it isn't necessary in this case.