Concern for Deduction Fee

[#1]

Hello, I've been an Upwork freelancer for almost 3 years now, why did you deduct 15% of my actual salary every week? I'm wondering why I get too much decrease turns out I have the 15% deduction. The last time check it was only 10% . Please help me.

[#2]

You can look at your transactions here Transaction History (upwork.com)

to see the type of deductions, you might have sales tax or other fees related to your country.