-29.91% is the change from 428 to 300
Calculation steps:
[( 300 - 428 ) ÷ 428] x 100 = -29.91%
Formula
Percentage change = [(300 - 428) / 428] x 100
Subtract the new number by the original number
300 - 428 = -128
-128 ÷ 428 = -0.29906542056074764
-0.29906542056074764 x 100 = -29.91%