# Compare two values on two different dates

**URL:** <https://discuss.elastic.co/t/compare-two-values-on-two-different-dates/163964>\
**Category:** Kibana\
**Created:** [January 12, 2019, 12:27am UTC](https://discuss.elastic.co/t/compare-two-values-on-two-different-dates/163964 "2019-01-12T00:27:59Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![kmakhlouf](https://avatars.discourse-cdn.com/v4/letter/k/48db29/32.png) [@kmakhlouf](https://discuss.elastic.co/u/kmakhlouf)\
**Post date:** [January 12, 2019, 12:27am UTC](https://discuss.elastic.co/t/compare-two-values-on-two-different-dates/163964/1 "2019-01-12T00:27:59Z")

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I want to compare two numerical values between a period and its period similar to a week before. Could you help me ?  
Is there a way to subtract these two values?

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [February 9, 2019, 12:28am UTC](https://discuss.elastic.co/t/compare-two-values-on-two-different-dates/163964/2 "2019-02-09T00:28:05Z")

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