How were Donald Trump’s tariffs calculated?

US President Donald Trump has imposed a 10% tariff on goods from most countries being imported into the US, with even higher rates for what he calls the “worst offenders”.
But how exactly were these tariffs – essentially taxes on imports – worked out? BBC Verify has been looking at the calculations behind the numbers.
When Trump presented a giant cardboard chart detailing the tariffs in the White House Rose Garden it was initially assumed that the charges were calculated based on existing trade barriers of individual countries.
But later, the White House published what might look like a complicated mathematical formula.
But the actual exercise boiled down to simple maths: take the trade deficit for the US in goods with a particular country, divide that by the total goods imports from that country and then divide that number by two.

Courtesy: BBC