Seven eighths is close to one whole. Estimate first, then choose its exact percentage.
الشرح
Computing 7 / 8 x 100 gives 87.5%. The value 80% is only a rough estimate, while 7.8% is far too small for a fraction close to 1.
Computing 7 / 8 x 100 gives 87.5%. The value 80% is only a rough estimate, while 7.8% is far too small for a fraction close to 1.