A Z-Score Becomes a Percentile
The shaded area left of your score is your percentile rank
μ (z=0)
z = +0.875
≈ 81%
scored at or below you
your z-score of +0.875
→ 81st percentile → B
z → percentile: −2 → 2% −1 → 16% 0 → 50% +1 → 84% +2 → 98%