The percent of change from 78 pounds to 19 pounds would be 75.6%.
How to find the percentage from the total value?
Suppose the value of which a thing is expressed in percentage is "a'
Suppose the percent that considered thing is "a" is b%
Then since percent shows per 100 (since cent means 100), thus we will first divide the whole part into 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b percent means).
Thus, that thing in number is
[tex]\dfrac{a}{100} \times b[/tex]
The percent of change from 78 pounds to 19 pounds.
78 - 19 = 59
so, 59 / 78 = 0.75641
The percentage will be
= 0.75641 x 100
= 75.641
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