According to the latest numbers based on Google’s Android distribution, Android Nougat runs on about 0.4 percent of devices. Compared to last months number of 0.3 percent, this is not a significant increase. However, Android 6.0 Marshmallow is now running on about 26.3 percent of devices which amounts to an increase of 2.3 percent when compared to last month’s 24 percent share. 
Coming to Android Lollipop, Android 5.0 takes up 10.8 percent share while Android 5.1 Lollipop runs on about 23.2 percent of devices. Last month, these figures were 11.3 percent for Android 5.0 and 22.8 percent for Android 5.1 which indicates that increase in Marshmallow figures is majorly at the cost of Android Lollipop. Further, some of the devices also seem to have been updated from Android 5.0 to Android 5.1. 
Android 4.4 Kitkat also witnessed a decrease of 1.2 percent from 25.2% in the month of November to 24% this month. Going even backward, Android Jelly Bean currently takes up about 12.8 percent share in total, divided as 4.5%, 6.4% and 1.9% for Android 4.1.x, Android 4.2.x and Android 4.3 respectively. Last month, the total figure for Jelly Bean stood at 13.7 percent. Things didn’t change much for Android 4.0 Ice Cream Sandwich, Gingerbread, and Froyo with ICS and Gingerbread taking 0.2 percent each while 0.1 percent of Android devices still run on Froyo.
Recently, WhatsApp confirmed that it will drop support for Android 2.1 Eclair and 2.2 Froyo which based on these figures will only affect 0.1% of Android devices. Moreover, we expect this percentage to fall below even this figure by next year.
Coming to the screen sizes and densities, Normal size retains its domination with 88.3% share with hdpi (38.8%) still leading in terms of density followed by xhdpi at 32.4%.
Jumping to the Open GL( Graphics Library) Version, v3.0 now stands top with 42.4% of the total distribution followed by v2.0 at 41.9% and v3.1 at 15.7%.
Keeping everything aside, Android Nougat still seems to run only on a handful devices which is generally the case with every new version of Google’s smartphone Operating System. Unlike, Apple’s iOS, Android is an open source project which is why different OEMs (Original Equipment Manufacturers) has their own skin on top of the Android Source Code. So, when Google rolls out an update, it takes time for companies like Samsung, LG to integrate the source code with their skin which is why often a lot of Android smartphones, apart from Nexus or Pixel devices, receive the update much later.