Percentages are calculated using the % symbol.
When added or subtracted the percentage symbol resolves to one percent of the value being added or subtracted from. The following equation calculates the price of a $140 item with 15% tax (140 + (15÷100)×140).
In all other cases the percentage symbol resolves to a fraction out of 100. The following equation calculates one quarter of 80 apples ((25÷100)×80).
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