# Understanding period over period changes

Easily understand how resources and workloads changed in the given period.

Niall WoodwardCo-founder & CTO of SELECT


To help you more easily understand how your consumption has changed, we've added a new % Change column to all tables below each chart. This allows you to quickly identify how resources have changed in a given period.

The example below shows Snowflake spend between November 21 and December 20. In this example, Compute spend decreased by 1.42% relative to the previous 30 day period (October 21 to November 20).

![SELECT period over period change](https://media.doit.com/announcements/migration/ann-select-2023-12-07-percent-change/afde55c370b4a3fd.png)