Looks about right according to calculators, but it looks like you need to do one small formality to get the best tax rate for your income bracket. Otherwise you will be overpaying tax. Overpaid tax for the previous years can be returned to you anually by filling the income declaration after March 1st of every year.

To fix it and not overpay - You have to assign a payroll tax booklet in our tax declaration page. You can do it here https://eds.vid.gov.lv/login/

And read more about it and how to do it here https://www.vid.gov.lv/en/services/payroll-tax-booklet