Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
Last week, the price of a movie ticket was $100. This year the price is down by 20%. What's the new price of the movie ticket?

### Response:
 Wiki iliyopita, bei ya tiketi ya sinema ilikuwa $100.
Mwaka huu bei imepungua kwa 20/100 * 100 = $<<20/100*100=20>>20.
Hivyo, bei mpya ya tiketi ya sinema ni 100 - 20 = $<<100-20=80>>80.