Support in the US has fallen from 53 per cent in 2014 to 18 per cent today, while Germans in favour of the deal have dropped from 55 per cent two years ago to just 17 per cent in 2016.
The survey, conducted by YouGov for the Bertelsmann Foundation, is bound to cast a shadow over TTIP talks between German Chancellor Angela Merkel and US President Barack Obama in the next few days.