When currency USD is compared to currency IRR it is considered currency pair USD/IRR which seeks to find out how many IRR are needed to acquire a USD. After recent events that figure is at 42025.00000.
Note that in this case USD is the transaction currency or the base currencyand on the other hand, IRR is considered the counter currency (although it can also be called the quote currency).
In the last hours we have been able to observe how the price of this pair has varied and as a result we obtain a minimum price of 42002.50000 and a maximum price of 42250.00000 . This means that it has had a variation of 0.00000, which translated into a percentage is a 0.00000%.