China has announced it will impose 84 per cent tariffs on US goods imports from tomorrow, as the war of words and levies between the world’s two largest economies escalates. The new measures –  50 per cent on top of the 34 per cent already imposed by Beijing’s finance ministry – are a like for like increase for the 50 per cent increase levied by Trump overnight, taking the US’s total tariff on Chinese goods to 104 per cent.