Here are various phrases that can be utilized to convey percentages.

Fractions
73%- nearly three quarters
51%- just over a half
49%- just under a half
32%- nearly a third
3%- a tiny fraction
50%- exactly a half
26%- roughly one quarter
49%- around a half
24%- almost a quarter
77%- approximately three quarters

Proportions
70%- a large proportion
71%- a significant majority
15% a small minority
3%- an insignificant minority

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