A 64% increase in the oil price and 15% decrease in the dollar value. The dollar value is effecting it, but it is not the dominate cause of the price change.
You have to be careful when playing the “up x% or down x%” game.
Example: I have a widget priced at $1. I raise the price 50%. It is now $1.50. Then I lower the price 33%. It is $1.00 again. But it went up 50% and down only 33%.