By Leah Montebello The European tech industry has lost more than $400bn (£327bn) in value as dealmaking ground to a halt this year amid ongoing economic uncertainty. According to a report by London-based Atomico, tech startups across Europe are on track to raise $85bn (£70bn) in funding this year, down $15bn (£12bn) on 2021 levels. The report said the industry was now now valued at $2.7 trillion (£2.2 trillion) as the region grapples with war in Ukraine and inflationary pressures. The number of unicorns in the continent also slumped to 31 this year, the lowest level since 2017, and down from o…