-42.31% is the change from 728 to 420
Calculation steps:
[( 420 - 728 ) ÷ 728] x 100 = -42.31%
Formula
Percentage change = [(420 - 728) / 728] x 100
Subtract the new number by the original number
420 - 728 = -308
-308 ÷ 728 = -0.4230769230769231
-0.4230769230769231 x 100 = -42.31%