Question

Yesterday 270 concert tickets were sold. today 216 were sold. what is the percent of change

Answer 1

Given:
yesterday = 270
today = 216

yesterday's number of tickets sold is the basis of the percent of change. So, 270 is the 100%.

270 - 216 = 54  * value of the change in ticket sales

54/270 = 0.20 x 100% = 20%  * percent of change

There was a 20% decrease in ticket sales.