Every call that rings out while you're busy, and every message that waits until morning, is a customer who might go elsewhere. Move the sliders to match your business.
How it's worked out: missed per week × 4.33 weeks × share who are new customers × share who would have booked × value of a new customer. It's an estimate built only from the numbers you enter. It isn't a promise of results.
The starting values for each type of business are just a starting point. Change them to match your own diary.