how to figure out the percentage of sales tax?
['Subtract the Tax Paid From the Total. ... ', 'Divide the Tax Paid by the Pre-Tax Price. ... ', 'Convert the Tax Rate to a Percentage. ... ', 'Add 100 Percent to the Tax Rate. ... ', 'Convert the Total Percentage to Decimal Form. ... ', 'Divide the Post-Tax Price by the Decimal. ... ', 'Subtract the Pre-Tax Price From Post-Tax Price.']