-45.91% is the change from 721 to 390
Calculation steps:
[( 390 - 721 ) ÷ 721] x 100 = -45.91%
Formula
Percentage change = [(390 - 721) / 721] x 100
Subtract the new number by the original number
390 - 721 = -331
-331 ÷ 721 = -0.4590846047156727
-0.4590846047156727 x 100 = -45.91%