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scharern
Frequent Visitor
5 years ago

Calculating Percentage Active Over Time

Doing some analysis on remaining lifespan of components. I have an installation date, a retirement date, a calculated column determining if the component is active or retired, and a calculated age based on retirement date or today, depending on if active or retired. I'm trying to determine a cumulative percentage of components are still active at a given age. For example, if I have 100 components and 10 fail per year in the five years since installation, I'm currently showing 90% active for each year, instead of 50% active after year five.