How does “Answers, overrules and drift” work on the Statutory fees (ICO & CITB) page?

Each test shows Saral's answer, where it came from and the figure behind it. A person's Yes, No or figure replaces it and is kept; Use Saral's answer hands the test back. When a record behind a decided answer changes — a new starter, a different turnover — the row shows how many answers have drifted, so a verdict settled last year is looked at again rather than trusted. Open questions count the tests nothing on file could answer. Where: Statutory fees (ICO & CITB) (/accounts/statutory-fees).