may use % (percent) in discount table
example 1 :
10€ for 1 to 9 parts
8€ for 10 to 99 parts
5€ up to 100 parts
You enter 10 for the product price and 10:8, 100:5 in the new field.

example 2 :
10€ for 1 to 9 parts
10% off for 10 to 99 parts
15% off up to 100 parts
You enter 10 for the product price and 10:10%, 100:15% in the new field.

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