-31.45% is the change from 407 to 279
Calculation steps:
[( 279 - 407 ) ÷ 407] x 100 = -31.45%
Formula
Percentage change = [(279 - 407) / 407] x 100
Subtract the new number by the original number
279 - 407 = -128
-128 ÷ 407 = -0.3144963144963145
-0.3144963144963145 x 100 = -31.45%