ClickWebTools blog https://clickwebtools.com/blog/ Short guides to the maths and formats behind ClickWebTools. en-us Fri, 02 Oct 2026 09:00:00 GMT Percentage change vs percentage pointshttps://clickwebtools.com/blog/percentage-change-vs-percentage-points/https://clickwebtools.com/blog/percentage-change-vs-percentage-points/Thu, 24 Sep 2026 09:00:00 GMTWhy a rate moving from 4% to 5% is a 25% increase, and when to say “one point”. Margin and markup are not the same numberhttps://clickwebtools.com/blog/margin-vs-markup/https://clickwebtools.com/blog/margin-vs-markup/Thu, 17 Sep 2026 09:00:00 GMTTwo ways to describe profit on a sale, with worked examples for pricing. Five common JSON errors and how to read themhttps://clickwebtools.com/blog/reading-json-errors/https://clickwebtools.com/blog/reading-json-errors/Wed, 09 Sep 2026 09:00:00 GMTTrailing commas, single quotes and other mistakes, with the messages browsers show.