In Hong Kong the interest rates decisions are taken by the Hong Kong Monetary Authority (HKMA). The main interest rate is Base rate, adjusted with accordance to the Hong Kong dollar’s demand or supply.
Last month Hong Kong interest rate was 4.75%, and the month before that it amounted to 5%.
Interest rate is the proportion of a loan that is charged as interest to the borrower, typically an annual percentage of the loan outstanding. When it comes to the national level, interest rate is a rate at which banks borrow money from a country's central bank.
Yes, negative interest rate can be used by the government as a monetary policy tool to stimulate economy growth.
Growing or falling interest rate can influence the country's economy, stimulate it or lower the inflation level. Even people can feel the effect of interest rate's movements — for example, if interest rate increases, loans get more expensive.