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Some value / exact value x 100 = percentage
' X ' is positive 10 or negative 10.
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 Ythe 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)
To calculate 25 percent of a value, multiply the value by 0.25. For example, 25 percent of 130 is equal to 130 x 0.25 = 32.5.
To find 40 percent of a value, multiply the value by 0.4. In this instance, 0.4 x 58 = $23.20.