-49.02% is the change from 663 to 338
Calculation steps:
[( 338 - 663 ) ÷ 663] x 100 = -49.02%
Formula
Percentage change = [(338 - 663) / 663] x 100
Subtract the new number by the original number
338 - 663 = -325
-325 ÷ 663 = -0.49019607843137253
-0.49019607843137253 x 100 = -49.02%