Correct use of || operator

Hi,

OT(+15-15)Test =
CALCULATE(COUNTROWS ( FILTER ( OTIF, OTIF[ShiftInTime]=OTIF[TimeFrom]*[targetperc OT]||OTIF[ShiftInTime]<>OTIF[TimeFrom]*[targetperc OT] )
))

I want to multipy by [targetperc OT] if OTIF[ShiftInTime]=OTIF[TimeFrom] or OTIF[ShiftInTime]<>OTIF[TimeFrom]

My results don't change. Is the above measure sound?