%CH - Percent Change Function

Returns the percent change from x (level 2) to y (level 1) as a percentage of x.

Level 2Level 1->Level 1
xy->100(y-x)/x
x'symb'->'%CH(x,symb)'
'symb'x->'%CH(symb,x)'
'symb1''symb2'->'%CH(symb1,symb2)'
x_unity_unit->100(y_unit-x_unit)/x_unit
x_unit'symb'->'%CH(x_unit,symb)'
'symb'x_unit->'%CH(symb,x_unit)'

Adrian Drury
Last modified: Wed Jun 3 09:57:44 EDT 1998