-22.56% is the change from 390 to 302
Calculation steps:
[( 302 - 390 ) ÷ 390] x 100 = -22.56%
Formula
Percentage change = [(302 - 390) / 390] x 100
Subtract the new number by the original number
302 - 390 = -88
-88 ÷ 390 = -0.22564102564102564
-0.22564102564102564 x 100 = -22.56%