What is 1 km is 800 m in percentage?

To find the percentage of 1 km in 800 m, we first need to convert both measurements to the same unit. Since 1 km is equal to 1000 m, we have 1 km = 1000 m. Now, we can calculate the percentage by dividing 800 m by 1000 m and then multiplying by 100 to get the percentage. So, (800 m / 1000 m) x 100 = 80%. Therefore, 1 km is 80% of 800 m.