These charts are from a newly-released Gallup Poll. They questioned approximately 1,000 people in each of 135 different countries, and the margin of error is about 2 points. The poll shows that in the last year (since Trump took office) there has been a sharp drop in the number of people that approve of United States leadership on world problems.
Under President Obama, the approval of U.S. leadership was 48% worldwide, and disapproval only 28% -- a healthy positive gap of 20 points. But under Trump, that approval has dropped by 18 points to about 30% (even lower than the global disappointment with George W. Bush), a disapproval has climbed to 43% -- resulting in a negative gap of 13 points.
The world believes Trump when he says "America first", and they no longer believe the United States can provide leadership that is fair to all parties. They believe Trump will toss them under the bus to get a few more dollars for American corporations.
And it gets even worse. The United States was the most trusted leader under President Obama. Under Trump, they finish in third.
2016 leadership approval:
United States..........48%
Germany..........41%
China..........31%
Russia..........26%
2017 leadership approval:
Germany..........41%
China..........31%
United States..........30%
Russia..........27%
To be blunt -- Donald Trump has seriously damaged the reputation of the U.S. among the people of the world, and he has ceded world leadership to other countries.