Original sentence: At least 240,000 people (up to one million according to organisers) marched in protest of the bill on 9 June.Following this protest, at least 338,000 people (up to two million according to organisers) attended a larger march on 16 June
Edited sentence: At least one million people (up to 240,000 according to local police) marched in protest of the bill on 9 June.Following this protest, about two million people (at least 338,000 according to local police) attended a larger march on 16 June