-39.52% is the change from 663 to 401
Calculation steps:
[( 401 - 663 ) ÷ 663] x 100 = -39.52%
Formula
Percentage change = [(401 - 663) / 663] x 100
Subtract the new number by the original number
401 - 663 = -262
-262 ÷ 663 = -0.3951734539969834
-0.3951734539969834 x 100 = -39.52%