The official exchange rate had previously stood at 55 pounds to the dollar, while the black market rate had been fluctuating recently between 350 and 400 pounds.
The vast western region of Darfur was convulsed by bloody fighting in 2003. It killed 300,000 people and displaced 2.5 million, according to the United Nations.
Bashir, who is currently in custody in Khartoum, is wanted by the International Criminal Court for alleged genocide and war crimes in Darfur perpetrated more than a decade ago.