Find each percent of change. Round to the nearest whole percent. State
whether the percent of change is an increase or decrease.
1. $12 to $6

You take the difference between the two numbers and make it the numerator and make the original amount the denominator. (If it’s an improperly fraction then it’ll be an increase.) Set that fraction equal to x/100 then solve the way you’d solve a proportion.

Its d so thats how it would would back from 1.0 form three four two