(Reuters) - Online banking company Chime has laid off 12 per cent of its employees, a spokesperson said on Wednesday, blaming "current market dynamics" as this year's tech rout slams the once-high valuations of growth startups. The San Francisco-based company slashed about 160 jobs, joining a series of fintechs such as Swedish payments firm Klarna that are looking for ways to cut costs as rampant inflation and the Ukraine crisis worsen business sentiment. Klarna, once Europe's most valuable startup, saw its valuation drop to $6.7 billion in July from $46 billion earlier.