Answer:
Percent decrease in population = 12%
Explanation:
Given that:
Population of city = 160,000
Population of city after several years = 140,800
Difference= 160000 - 140800 = 19200
Percent decrease =

Percent decrease =

Percent decrease = 0.12 * 100
Percent decrease = 12%
Hence,
Percent decrease in population = 12%