Graphite asPercent

Hello - new to Graphite. I am trying to get the % of incidents.itsd as a % of incidents.all. Queries look like so;

#A - servicenow.incidents.all
#B - servicenow.incidents.itsd
#C - asPercent(servicenow.incidents.all, servicenow.incidents.itsd)

However the aPercent is always 0.

strange, not sure what could be the reason for that.

Yes very strange. I also have some influx db’s but I don’t think this type of math is possible there.