-5.56% is the change from 306 to 289
Calculation steps:
[( 289 - 306 ) ÷ 306] x 100 = -5.56%
Formula
Percentage change = [(289 - 306) / 306] x 100
Subtract the new number by the original number
289 - 306 = -17
-17 ÷ 306 = -0.05555555555555555
-0.05555555555555555 x 100 = -5.56%