The belief that Trump keeps his promises saw the steepest drop, falling from 62 percent at the beginning of February to 45 percent in early April, a loss of 17 percentage points.
Democrats, independents and Republicans were all less likely to think Trump keeps his promises, though the dropoff was larger among those who identified as Democrats or liberals.
In the recent poll, just 40 percent of women think the president keeps his promises, compared to 51 percent of men.
As his 100-day milestone fast approaches, the president as of yet has also not been able to make good on promises of a massive infrastructure project. In February, 65 percent of women thought Trump kept his promises.
"Trump's drop in these poll numbers come after he has reversed many of his controversial positions to a more centrist Republican standard, including saying North Atlantic Treaty Organisation ‶is no longer obsolete" after hammering the U.S.'s eastern European bulwark alliance against Russian Federation throughout his 2016 presidential campaign, according to the New York Daily News. Most, 52 percent, said he is a strong and decisive leader.
The polling did, however, come amid Trump's decision to strike Syria militarily, which he authorized on April 6, shifting the stance he took in multiple tweets from 2013 and 2014 opposing such action in Syria. He even dropped 9 percent among conservatives.
A majority called Trump "a strong and decisive leader", although the share of Americans who answered this way also decreased seven percentage points since February.
As Gallup pointed out, these numbers are part of a deeper systemic problem in Trump's presidential image.
"For now Trump has lost significant ground with a public that only two months ago credited him with having one of the key characteristics of a successful president", pollsters noted.