So,
To simplify a fraction, we need to factor it. In other words, we need to prime factor both the numerator and the denominator.
\(\frac{875}{1000}\)
\(\frac{5*5*5*7}{2*2*2*5*5*5}\)
Cross-cancel.
\(\frac{7}{2*2*2} \ or\ \frac{7}{8}\)
Decimal: 0.875
Percent: 87.5%