The claim that 78,000 manufacturing jobs were lost since Trump took office is an oversimplification and underestimates the total manufacturing job losses reported by multiple sources, which range from about 75,000 to over 175,000 jobs lost during his administration.
78,000 manufacturing jobs LOST since Trump took office.

More federal jobs lost in May than any month since Trump took office
Source: marketplace.org
Key Evidence
Democrats report over 160,000 manufacturing jobs lost since Trump took office.
democrats.orgdemocrats.orgMEMO: Trump's Failed Jobs and Manufacturing Record
Trade war-related analysis estimates about 175,000 manufacturing jobs lost.
econbrowser.comeconbrowser.comGuest Contribution: “The Trade War Has Cost 175,000 Manufacturing Jobs and...
Tariffs increased steel jobs by ~1,000 but caused a net loss of ~75,000 manufacturing jobs due to higher costs.
weny.comweny.comTrump's shock-and-awe tariffs haven't fueled a manufacturing jobs boom
What the Evidence Shows
Multiple sources indicate that manufacturing job losses during Trump's tenure were significantly higher than 78,000. For example, a Democratic memo cites over 160,000 manufacturing jobs lost, and an analysis related to the trade war estimates about 175,000 manufacturing jobs lost.econbrowser.comeconbrowser.comGuest Contribution: “The Trade War Has Cost 175,000 Manufacturing Jobs and...
democrats.orgdemocrats.orgMEMO: Trump's Failed Jobs and Manufacturing Record
One source notes that Trump's 2018 steel tariffs increased steel employment by about 1,000 jobs but simultaneously caused a net loss of approximately 75,000 manufacturing jobs due to higher input costs, which aligns roughly with the figure in the claim but does not capture the full scope.weny.comweny.comTrump's shock-and-awe tariffs haven't fueled a manufacturing jobs boom
Other sources highlight broader job trends: The Heritage Foundation reports nearly 3 million people found jobs since Trump took office, indicating overall job growth but not specifically in manufacturing.heritage.orgheritage.org3 Million People Have Found Jobs Since Trump Took Office Additionally, federal government employment declined by nearly 200,000 workers, which is separate from manufacturing.
lancasterfarming.comlancasterfarming.comFederal government loses nearly 200K workers since Trump took office
Some sources emphasize that job losses are part of wider global trends affecting many countries, suggesting that attributing all manufacturing job losses solely to Trump's policies may be an oversimplification.finance.yahoo.comfinance.yahoo.comThe US has lost jobs since Trump took office, but so have many other countries
The claim's figure of 78,000 manufacturing jobs lost is lower than most estimates from credible analyses and appears to selectively represent a subset of data rather than the full picture.
In summary, while there were indeed manufacturing job losses during Trump's administration, the number cited (78,000) understates the extent according to multiple independent sources. The claim is therefore misleading because it presents an incomplete and minimized view of the data.