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You don't.

You could find percent of change but first you would have to learn to check your spelling!

Suppose the value changes from X to Y

the change is (Y - X)

the proportional change is (Y - X)/X = (Y/X - 1)

the percentage change is 100*(Y/X - 1)

that is,

100*(New Value/Old Value - 1)

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12y ago

What else can I help you with?