-50.98% is the change from 663 to 325
Calculation steps:
[( 325 - 663 ) ÷ 663] x 100 = -50.98%
Formula
Percentage change = [(325 - 663) / 663] x 100
Subtract the new number by the original number
325 - 663 = -338
-338 ÷ 663 = -0.5098039215686274
-0.5098039215686274 x 100 = -50.98%