Advanced Product Fields for WooCommerce
- In file advanced-product-fields-for-woocommerce-extended\includes\classes\integrations\class-woocs.php add next code:
if(!$this->is_default_currency() AND !$this->product_has_fixed_price($product) AND 'percent' != $type)
its will fix the data in the drop-down

- In the same file find function function add_footer_script and make fix there as on the next screen:
This is necessary to remove the conversion of the amount as a percentage, because this amount was already calculated from the converted price. Something like this:
- in file advanced-product-fields-for-woocommerce-extended\includes\classes\integrations\class-woocs.php add next code:
if('percent' == $type || 'p' ==$type ) return $amount;