As of december 2024, the game according to luckybanchos already had lost about 30% of it's population (down from 1.4 mils to barely under a million)
Your 25% estimate implies that people... came back for exactly nothing, and mind you, this was also inside a free campaign period.
As of august 2024, there were 42181 players on average playing the game on steam, as of today we are at 16481 which is a decrease of 60%. (and yes steam is a big enough sample)