-57.68% is the change from 723 to 306
Calculation steps:
[( 306 - 723 ) ÷ 723] x 100 = -57.68%
Formula
Percentage change = [(306 - 723) / 723] x 100
Subtract the new number by the original number
306 - 723 = -417
-417 ÷ 723 = -0.5767634854771784
-0.5767634854771784 x 100 = -57.68%