Working back from January 2017, Obama’s last month in office, there had been 6.423 million jobs added or 221,000 per month. The difference for the 29 months is 810,000 more jobs or 27,000 more per month than Trump.
Note that back in January this year the total difference was only 194,000, which means over the past five months it has increased by 616,000.
Yes, there's been quite a slowdown so far this year (the 6 months January through June), just 172,000 per month average, compared to 223,000 per month average in all of 2018.
For the 5 months February through June of 2019, it's been only 144,000 per month average.
Job numbers:
https://data.bls.gov/timeseries/CES0000000001
Monthly changes:
https://data.bls.gov/timeseries/CES0000000001?output_view=net_1mth