-42.79% is the change from 603 to 345
Calculation steps:
[( 345 - 603 ) ÷ 603] x 100 = -42.79%
Formula
Percentage change = [(345 - 603) / 603] x 100
Subtract the new number by the original number
345 - 603 = -258
-258 ÷ 603 = -0.42786069651741293
-0.42786069651741293 x 100 = -42.79%