How do you change tax rate on sharp calculator?

To change the tax rate on a Sharp calculator, first press the 'SETUP' or 'MODE' button, depending on your model. Then, look for the option labeled 'TAX' or 'TAX RATE' and select it. You can usually input the new tax rate by typing in the desired percentage and then pressing 'ENTER' or 'OK' to confirm. Finally, exit the setup mode to return to normal calculations with the updated tax rate.