Anyone know what Evasive Dance enhancement does? Description doesn't make sense

[supot2]

Improves your evasion ability so on a failed a reflex saving throw that normally deals half damage on a successful save, you only take 85% damage.

[YUTANG75]

When you get hit by an effect (for example by a trap for 100 damage) you may be able to make a reflex save to only take half damage (50).

If you have evasion and make the reflex save you will take 0 damage.

With improved evasion, you will take 0 damage on a successful save and half damage (50) on a failed save instead of the full damage (100).

With tiers 1, 2, 3 of evasive dance, it upgrades your evasion ability towards improved evasion, meaning you take 85,70,50% damage on a failed save instead. (85,70,50 damage).

[supot2]

oh i get it thanks! didn't realize its an enhancement that mimics the improved evasion feat