-9.05% is the change from 663 to 603
Calculation steps:
[( 603 - 663 ) ÷ 663] x 100 = -9.05%
Formula
Percentage change = [(603 - 663) / 663] x 100
Subtract the new number by the original number
603 - 663 = -60
-60 ÷ 663 = -0.09049773755656108
-0.09049773755656108 x 100 = -9.05%