Leaving consulting after 5 years

Hey folks,

Received an offer to exit consulting for a much better wlb and higher pay in industry.

I need to tell my boss I am leaving, tricky thing is that I was promoted to manager some months ago after the previous manager resigned.

I am the person in the team with the most knowledge and experience and I am managing an operation of 20 consultants in the team. I plan to transfer all my knowledge to my right-hand but several people left already in the team for a much higher salary during the last months, so I am concerned about the bad image that this could bring to the client.

How would you approach the conversation without burning bridges?

Thank you