-15.45% is the change from 330 to 279
Calculation steps:
[( 279 - 330 ) ÷ 330] x 100 = -15.45%
Formula
Percentage change = [(279 - 330) / 330] x 100
Subtract the new number by the original number
279 - 330 = -51
-51 ÷ 330 = -0.15454545454545454
-0.15454545454545454 x 100 = -15.45%