The easiest and fastest way [for non coders] would be to use SteemWorld.org and check under account stats. There is a section delegations, which shows both incoming and outgoing delegations, as well as expiring (returning) delegations.
For @musing it looks like this.
Aside from Steemworld.org as mentioned above, you could also look at:
Another Way you can recognise this apart from using steemworld.org which has been mentioned above, you can use STEEMD.COM login and the URL will look like this;
I just recently got a delegations some days ago if you log on with my URL in your browser you will see the delegation instantly, both outgoing and incoming