Do you mean the chart that he held up? He said that the tariffs charged by other countries was calculated by taking into account currency manipulation and things that MAGAs would not understand. In reality, he selected all countries that the US has a trade deficit with (bar Russia, Canada/Mexico) and then divided that by the value of imports from them into the USA.
Eg Vietnam-
trade deficit $123.5 billion divided by imports of $136.6 billion equals supposed tariffs of 90%.
New Zealand-
$1.1 billion deficit, imports of $5.6 billion, supposed tariffs of 20%
The irony is that the far east countries that he is hitting the hardest are the ones that manufacture products for American firms such as Nike and Timberland.
Even if those countries drop tariffs to zero percent, he will still punish them because they will still export more to America than they import from America. America wants cheap clothing and electronics, the people of Vietnam will still not want a $20k US motorbike even if the tariffs are zero percent.