-6.69% is the change from 299 to 279
Calculation steps:
[( 279 - 299 ) ÷ 299] x 100 = -6.69%
Formula
Percentage change = [(279 - 299) / 299] x 100
Subtract the new number by the original number
279 - 299 = -20
-20 ÷ 299 = -0.06688963210702341
-0.06688963210702341 x 100 = -6.69%