the price of an item yesterday was $140 today the price fell to $217 what is the percentage in deacrease?

Answer 1

140 to 217? is not a "fall" it's an increase

but maybe you could call it a "negative increase"

217 - 140 = 77, so it's a 77/217 decrease or 77/217 "negative increase" or about 0.355 decrease = 35.5% decrease or "negative increase"