Could somebody give me a formula to calculate odds after commission for Matchbook odds?

It's fearly easy to calculate new Betfair odds after commission since you only pay when you win (5%), but on Matchbook you pay 1% over the net winnings on a bet OR 1% of your stake when you lose.

Tried to search the internet but couldn't find anything specific, maybe it's not even possible to assign new odds with the Matchbook structure?

Thx