Final answer:
The percent reduction in interest rate is 16.09%.
Step-by-step explanation:
To calculate the percent reduction in interest rate, you subtract the new rate from the original rate, divide the result by the original rate, and then multiply by 100 to get a percentage. In this case, the original rate is 8.7% and the new rate is 7.3%.
To calculate the percent reduction:
Percent Reduction = ((8.7 - 7.3) / 8.7) * 100 = 16.09%
Therefore, the interest rate reduction represents a 16.09% reduction.