The value of the Australian dollar (A$) today is $0.73. Yesterday, the value of the Australian dollar was $0.69. The Australian dollar ________ by _______%.
A) depreciated; 5.80
B) depreciated; 4.00
C) appreciated; 5.80
D) appreciated; 4.00
I know that the dollar has appreciated but how do I calculate the appreciation rate. What is the equation to be used?