F.2 Maths

Assume measured value > actual value
percentage error=[(measured value-actual value)/actual value]*100%
percentage error/100%=[(measured value-actual value)/actual value]
relative error=[(measured value-actual value)/actual value]
relative error*actual value=measured value-actual value
(1+relative error)*actual value=measured value
actual value=measured value/(1+relative error)
#P.S.: relative error=percentage error/100% , which is in decimal form.