What is the Business Health score?

A number out of 100, in three bands — Strong from 71, Watch from 41, Needs action below that — built from nine factors: revenue trend, expense ratio, active customers, revenue against ad spend, connected sources, customer concentration, repeat customers, recurring revenue and labour cost. The thresholds are your trade's, not a universal one: a 60% expense ratio reads as lean for a roofing crew and high for a tax office. The revenue trend compares this month with the same days of last month, so the score does not fall on the first of the month. Explain my score lists which factors cost you points and the one thing to do about each.