Yes, since it's a percentage... As price rises, the amount of tax imposed of the good rises, thought the percentage of the tax is still constant.
For example, a 10% tax on the good,
Price - 10, amount of tax - 1
Price - 12, amount of tax - 1.2
Price - 14, amount of tax - 1.4
The increase in tax shifts the ss curve further as opposed to a specific amount of tax.
You can ask more questions, though I cannot say for sure I'll know the answers...