નવાણું ટકા બાદની વાત.

navāṇuṁ ṭakā bādanī vāta.

Literally: A matter of ninety-nine percent deduction.
What it means: Said of highly exaggerated or untruthful talk where almost everything said must be discounted.

Also said as

ગુજરાતી કહેવતસંગ્રહ (Gujarati Kahevat Sangrah) (1923) · read from the scan by machine — the Gujarati itself is unchecked · English is machine-made and nobody has checked it yet

Heard it differently, or know we've got the sense wrong? Tell us — that is exactly the kind of correction this needs.