Bing, Bang, Bongo is a concept that was introduced by my junior high english teacher when we were learning to write essays. I don't actually remember what the bing, bang, bongo nomenclature referred to, but I do remember the main point - and I believe it can be leveraged when we need to tell a story with data as well.
The idea is that you should first tell your audience what you're going to tell them. Then you tell it to them. Then you tell them what you just told them. If you're the one creating or giving the presentation, this can feel really redundant (because you are familiar with the content and know your stuff well). But to your audience (who is not as close to the content), it feels nice: you've set their expectations, then provided detail, then recapped. The repetition helps cement it in their memory. After three times of telling them, hopefully they are clear on what they are meant to know and do from the story you've just told.
The next post in this series will focus on reverse storyboarding.