I have tried every option I can choose, but still stuck at 96%

same, i haven't found a way to reach 100% yet

Вы на приколе? Игра ещё не доделанная, подождите сезон другой, и будет вам 100%

The highest level of corruption I was able to get to was 85% & I can't find anything else I can do to raise it any further. Do you have to do all the actions that raise corruption in a specific order?