The 2.5 million viewers and 0.8 demographic for Episode 4 of Season 4 is a significant drop from the 3.4 million viewers and 1.11 demo won by the season premiere last month.
In the span of a year, Agents of S.H.I.E.L.D. dropped by more than 1 million viewers and nearly 0.7 in the demo.
To compare even further, Episode 4 of last season scored 3.8 million viewers and a 1.48 in the 18 – 49 demographic.
Of course, Agents of S.H.I.E.L.D. is a genre show unlike anything else on network television, so it’s not necessarily fair to compare it to other more mainstream series on CBS and NBC.