-28.43% is the change from 728 to 521
Calculation steps:
[( 521 - 728 ) ÷ 728] x 100 = -28.43%
Formula
Percentage change = [(521 - 728) / 728] x 100
Subtract the new number by the original number
521 - 728 = -207
-207 ÷ 728 = -0.28434065934065933
-0.28434065934065933 x 100 = -28.43%