-8.74% is the change from 309 to 282
Calculation steps:
[( 282 - 309 ) ÷ 309] x 100 = -8.74%
Formula
Percentage change = [(282 - 309) / 309] x 100
Subtract the new number by the original number
282 - 309 = -27
-27 ÷ 309 = -0.08737864077669903
-0.08737864077669903 x 100 = -8.74%