-38.76% is the change from 663 to 406
Calculation steps:
[( 406 - 663 ) ÷ 663] x 100 = -38.76%
Formula
Percentage change = [(406 - 663) / 663] x 100
Subtract the new number by the original number
406 - 663 = -257
-257 ÷ 663 = -0.38763197586727
-0.38763197586727 x 100 = -38.76%