Don't use slide presentations for business meetings. Ever. Write a document or a memo instead. Every time.

Slides are ok as a backdrop for a talk, as long as that talk works as its own cohesive narrative. Slides are also ok as a last resort if it is what the audience demands. A sales meeting with people who expect slides. Or a pitch with investors too ignorant or lazy to demand the precision of a document instead.

But in general; a document will be much much better. This guide references Tufte's, whose own advice is to write docs.