Question

How do you find each percent of change when 12 is decreased to 48?

1. List item

Answer 1

`325%` of the original value
`81.25%` of the new value

Explanation:

Note that the symbol % is like a unit of measurement but one that is worth `1/100` of something

Let the unknown value be `x`
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`color(blue)("As a percentage of the original value")`

`12->48 => (48-12)/12=x/100`

`x=39/12xx100 = 325`

So we have: `325/100->325xx1/100->325xx%=325%`
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`color(blue)("As a percentage of the new value")`

`12->48=>(48-12)/48=x/100`

`x=39/48xx100= 81.25`

So we have: `81.25/100->81.25xx1/100->81.25xx%=81.25%`