project management - What is the most effective way to present and communicate a performance improvement (e.g. percentages, raw data, graphics)? -
What better way to describe improvements than percentage, or what is the difference between numbers? For example, if you have improved the performance of important ETL SQL queries from 4000 msec to 312 msec, how would you present it as a 'performance' as a performance review?
It is always better to measure the relative improvement
From 312ms, it is an improvement of 3688ms, which is 92.2% of the original speed. Therefore, you reduced the runtime to 92.2%. In other words, you took the runtime to a mere 7.8%.
On the other hand, in full numbers, these are usually not good because they are not comparable. (If your original runtime was 4,000,000 MMS then the improvement of 3688ms is not good.)
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