-23.22% is the change from 939 to 721
Calculation steps:
[( 721 - 939 ) ÷ 939] x 100 = -23.22%
Formula
Percentage change = [(721 - 939) / 939] x 100
Subtract the new number by the original number
721 - 939 = -218
-218 ÷ 939 = -0.2321618743343983
-0.2321618743343983 x 100 = -23.22%