Version 2.6.2: PayPal commission calculation formula for AUD is not correct

[Simon-Haynes]

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Reporting About the Latest Version? No
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Searched Issue Reports for Bug? Yes
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Reviewed the Good To Know Issue Reports? Yes
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BCOE&M Info
Version: 2.6.2
Installation URL: https://pro-am24.nswhomebrewing.org/index.php
Hosted Installation? o

Describe the Bug
Not a bug exactly, but the PayPal commission calculation formula for AUD is not correct and overcharges the entrant. Can you advise in which file/database this calculation is stored so that I may update it to (Entry Fee/0.974) + 0.30

To Reproduce
Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected Behavior
Correct calculation based on PayPal commission for AUD which is 2.6% + $0.30.

Screenshots
N/A.

Server Environment

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• MySQL Version:
• Other Info: [if applicable. Apache, nginx, etc.]

Local Environment

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Additional Context
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