-51.43% is the change from 663 to 322
Calculation steps:
[( 322 - 663 ) ÷ 663] x 100 = -51.43%
Formula
Percentage change = [(322 - 663) / 663] x 100
Subtract the new number by the original number
322 - 663 = -341
-341 ÷ 663 = -0.5143288084464555
-0.5143288084464555 x 100 = -51.43%