Less than half of one percent of EU market revenues is shared with writers and directors:

In the EU the audio visual market was valued in 2013 at €122 billion. If you calculate the share of exploitation revenue from the entire EU audio visual market that goes to directors and screen writers it is less than half of one percent: 0.37% (source: SAA).

Only a little over one half of one percent of US market revenues is shared with writers and directors:
In the USA the filmed entertainment market (box office, home video and tv subscriptions) was valued in 2017 at US$226.9 billion (source selectausa.gov). If you calculate the share of this revenue that is paid to screenwriters and directors under contract via their residuals (collected and paid out by the talent guilds – WGA and DGA) we estimate these two talent groups share approximately one half of one percent: 0.58%.