In a recent study of 100 households in a city, data was collected on the number of pets owned. The table below summarizes the number of households that own a specific number of pets:
Number of Pets | Number of Households |
---|---|
0 | 40 |
1 | 30 |
2 | 20 |
3 | 8 |
4 or more | 2 |
Based on this data, what is the percentage of households that own at least one pet?