-30.43% is the change from 723 to 503
Calculation steps:
[( 503 - 723 ) ÷ 723] x 100 = -30.43%
Formula
Percentage change = [(503 - 723) / 723] x 100
Subtract the new number by the original number
503 - 723 = -220
-220 ÷ 723 = -0.30428769017980634
-0.30428769017980634 x 100 = -30.43%