The Percentage Change Method has historically been very effectively used by analysts on very long time horizons and very extreme percentage changes, for example a -6% or more drop in any index doesn't happen very often but it has very large implications and that much selling pressure typically leads to more selling at least for a while as a consequence of it. Similarly this can be applied to shorter time horizons. This indicator is ideal for 1min, 3min and 5min time horizons. Where I found it to be particularly helpful and one of the reasons I created it is for the market opening. If you trade the Mini Nasdaq for example and put it on a 1min setting then you can catch the changes that often happen in the first hour pretty well.