  We extend the Ultra-Diffuse Galaxy (UDG) abundance relation,
$N_{UDG}-M_{200}$, to lower halo mass hosts
$(M_{200}\sim10^{11.6-12.2}M_{\odot})$. We select UDG satellites from published
catalogs of dwarf satellite galaxies around Milky Way analogs, namely the
Exploration of Local Volume Satellites (ELVES) survey, Satellite Around
Galactic Analogs (SAGA) survey, and a survey of Milky Way-like systems
conducted using the Hyper-Suprime Cam. Of the 516 satellites around a total of
75 Milky Way-like hosts, we find 41 satellites around 33 hosts satisfy the UDG
criteria. The distributions of host halo masses peak around
$M_{200}\sim10^{12}M_{\odot}$ independent of whether the host has a UDG
satellite or not. We use literature UDG abundances and those derived here to
trace the $N_{UDG}-M_{200}$ relation over three orders of magnitude down to
$M_{200}=10^{11.6}M_{\odot}$ and find a best-fit linear relation of $N_{UDG} =
(38\pm5)\cdot(\frac{M_{200}}{10^{14}})^{0.89\pm0.04}$. This sub-linear slope is
consistent with earlier studies of UDG abundances as well as abundance
relations for brighter dwarf galaxies, excluding UDG formation mechanisms that
require high-density environments. However, we highlight the need for further
homogeneous characterization of UDGs across a wide range of environments to
properly understand the $N_{UDG}-M_{200}$ relation.
