Custom Table widget for calculating & usage of IPAM IPv4 Supernets.
As you may know, IPAM approach in calculating supernet usage is a bit misleading, which I described here:
https://thwack.solarwinds.com/products/ip-address-manager-ipam/i/feature-requests/ipam---better-supernet-utilization
In Custom Table Edit you will need to define Percentage Bar: