Given that there are 250 seats in the cinema and they are 170 people sitting on the seats provided, in order to get the percentage we will first arrange the given details.
250 seats
170 seats filled
X = percentage
Take 170 / 250
So it will be 170 ● 100 = 17,000
Next, 17,000 250 = 68
So we will have 170 is the 68% of 250. Therefore, 68% of the seats in cinema are filled.