How do I compare different time periods of a series when using the Slice analysis?

First, select the Period you are interested in from the drop-down list. This will create one sliced series per period.  

Then, set the calculation range. You can leave it blank if you want to look at the full history of the time series.

You can also rebase each sliced output at its first observation by ticking the setting “Rebase with base value”.

You’ll find more information on using the slice analysis here.