How much do berries reduce the damage of super-effective moves?

For example, a Yache Berry reduces the damage of a super-effective Ice type move, but by exactly how much?

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Sources - Knowledge andSmogonHope this helps.

Occa Berryreduces damage from a super effectiveFireattack by 50%.Passho Berryreduces damage from a super effectiveWaterattack by 50%.Wacan Berryreduces damage from a super effectiveElectricattack by 50%.Rindo Berryreduces damage from a super effectiveGrassattack by 50%.Yache Berryreduces damage from a super effectiveIceattack by 50%.Chople Berryreduces damage from a super effectiveFightingattack by 50%.Kebia Berryreduces damage from a super effectivePoisonattack by 50%.Shuca Berryreduces damage from a super effectiveGroundattack by 50%.Coba Berryreduces damage from a super effectiveFlyingattack by 50%.Payapa Berryreduces damage from a super effectivePsychicattack by 50%.Tanga Berryreduces damage from a super effectiveBugattack by 50%.Charti Berryreduces damage from a super effectiveRockattack by 50%.Kasib Berryreduces damage from a super effectiveGhostattack by 50%.Haban Berryreduces damage from a super effectiveDragonattack by 50%.Colbur Berryreduces damage from a super effectiveDarkattack by 50%.Babiri Berryreduces damage from a super effectiveSteelattack by 50%.Roselia Berryreduces damage from a super effectiveFairyattack by 50%.

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