-15.92% is the change from 603 to 507
Calculation steps:
[( 507 - 603 ) ÷ 603] x 100 = -15.92%
Formula
Percentage change = [(507 - 603) / 603] x 100
Subtract the new number by the original number
507 - 603 = -96
-96 ÷ 603 = -0.15920398009950248
-0.15920398009950248 x 100 = -15.92%