Arvino It is a possibility your videos were getting inserted onto sites hit by the update, which could explain the slight decrease in Humix revenue, though the decrease in revenue on your shared videos was low. We also don't have any data available on the number of sites hit by the Google update sadly.
I'd like to reiterate that your Humix views and revenue are down from the videos on your own site, which would typically occur because there is less visits coming to the site overall. I'd advise going to your Humix dashboard, scroll down and you can compare the video views/revenue for videos on your site on this month vs last month