-7.29% is the change from 288 to 267
Calculation steps:
[( 267 - 288 ) ÷ 288] x 100 = -7.29%
Formula
Percentage change = [(267 - 288) / 288] x 100
Subtract the new number by the original number
267 - 288 = -21
-21 ÷ 288 = -0.07291666666666667
-0.07291666666666667 x 100 = -7.29%