Hello, I have this query:     | mstats avg(_value) as packets WHERE index=metrics_index sourcetype=network_metrics (metric_name=*.out) ((metric_name="InterfaceEthernetA.*" OR metric_name="InterfaceEthernetB.*") AND (host="hostA" OR host="hostB")) span=1m by metric_name,host | rex field=metric_name ".*InterfaceEthernet(?<mn>\d_\d*)" | eval kbits=packets*8/1000 | timechart span=30m sum(kbits) by mn       It returns this results:     From those results, I would like to make operations generating another column with those results...   For example: (ColumnA - ColumnB) / ColumnA * 100   How could I do that? ... View more