A Scientist Creates a New Temperature Scale with Units of $\degree$

A scientist creates a new temperature scale with units of " $\degree$ S" by setting the melting and boiling points of sulfur to be 0 $\degree$ S and 100 $\degree$ S,respectively.On the Celsius scale,sulfur melts at 115 $\degree$ C and boils at 445 $\degree$ C.What is the formula to convert from $\degree$ S to degrees Celsius ( $\degree$ C) ?

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