-45.49% is the change from 721 to 393
Calculation steps:
[( 393 - 721 ) ÷ 721] x 100 = -45.49%
Formula
Percentage change = [(393 - 721) / 721] x 100
Subtract the new number by the original number
393 - 721 = -328
-328 ÷ 721 = -0.4549237170596394
-0.4549237170596394 x 100 = -45.49%