The equation for percent increase is: (x-y)/y, where x is the final price and y is the beginning price. So for this problem we substitute to get: (250000-200000) / 200000 We subtract the 200000 to get: 50000 / 200000 We divide by 200000 to get: .25 We can convert this to percent by multiplying by 100. We get: 25% Hope this helps.