Answer:
The correct answer is -3.963%.
Step-by-step explanation:
According to the scenario, the given data are as follows:
Interest rate = 7.85%
Rate of inflation = 12.3%
So, we can calculate the real interest rate by using the following method:
Real interest rate =[ (1 + Interest rate) ÷ ( 1 + inflation rate) ] - 1
By putting the value, we get,
Real interest rate =[ (1 + 0.0785) ÷ ( 1 + 0.123) ] - 1
= -3.963%
So, the purchasing power of your savings decreased by 3.963%.