-31.1% is the change from 730 to 503
Calculation steps:
[( 503 - 730 ) ÷ 730] x 100 = -31.1%
Formula
Percentage change = [(503 - 730) / 730] x 100
Subtract the new number by the original number
503 - 730 = -227
-227 ÷ 730 = -0.31095890410958904
-0.31095890410958904 x 100 = -31.1%