I am downloading two files from Internet. Their combined speed would be around 80Kbps, but the activity monitor shows a huge data transfer, more than 200Kbps. I already turned off auto-update. Below is the screenshot of downloading in the browser and the activity monitor:

[![enter image description here](https://i.stack.imgur.com/2vam9.png)](https://i.stack.imgur.com/2vam9.png)

Please guide me; what can be wrong here? Maybe my knowledge is not accurate about this.

I am using macOS Sierra 10.12.4.