-49.09% is the change from 603 to 307
Calculation steps:
[( 307 - 603 ) ÷ 603] x 100 = -49.09%
Formula
Percentage change = [(307 - 603) / 603] x 100
Subtract the new number by the original number
307 - 603 = -296
-296 ÷ 603 = -0.49087893864013266
-0.49087893864013266 x 100 = -49.09%