I have a data point that is continuously counting up. I would like to build a dashboard that shows the delta between the latest reading and the previous reading or find the delta between a number in time. For example, if the latest reading was 100 and the previous reading was 99 I would want to return a 1. Or if the latest reading was 100 but at the beginning of the month the reading was 50 I would want to return and chart a 50.
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