Question

A party size bag of tortilla normally coast 3.80. the supermarket has them on sale today for 2.25. what is the percentage of the discount

Answer 1

% discount = ((sale price)/(regular price) -1)*100%
.. = (2.25/3.80 -1)*100%
.. = (0.5921 -1)*100%
.. = -0.4079*100%
.. = -40.79%

The discount is about 41% from the regular price.