Change Currency

Hello, I am using woocommerce in the Adventurous Pro premium version. I want to change the currency to Singapore Dollars. How do I do this so that my website visitors will not be confused and think they are priced in US dollars? Please see product listing here: https://www.buddhastatuesnow.com/product/gold-gilded-crowned-amitabha-buddha-statue/ I have already changed the currency in the back office but it does not change the product display and is still looks like the USD symbol. It is normally displayed S$ in front of the numerals to distinguish it from the dollar symbol.