-34.33% is the change from 603 to 396
Calculation steps:
[( 396 - 603 ) ÷ 603] x 100 = -34.33%
Formula
Percentage change = [(396 - 603) / 603] x 100
Subtract the new number by the original number
396 - 603 = -207
-207 ÷ 603 = -0.34328358208955223
-0.34328358208955223 x 100 = -34.33%