-30.52% is the change from 724 to 503
Calculation steps:
[( 503 - 724 ) ÷ 724] x 100 = -30.52%
Formula
Percentage change = [(503 - 724) / 724] x 100
Subtract the new number by the original number
503 - 724 = -221
-221 ÷ 724 = -0.3052486187845304
-0.3052486187845304 x 100 = -30.52%