How do you find the percent change if original: 66 dimes and new: 30 dimes?
read as -> 54 point 545454......%
Assumption: your question means the following
Old price = 66 dimes
New price= 30 dimes ( a reduction in price)
Express the reduction as a percentage of the old price.
Change in price is (66-30) dimes = 36 dimes
As a proportion of the old price the reduction is
% is also a fraction but expressed as parts of 100 instead of parts of 66.
Without going into the mechanics of the mathematics involve the short cut method is:
The following is only stated as an interest point:
Expressed as an exact value this is