-36.2% is the change from 663 to 423
Calculation steps:
[( 423 - 663 ) ÷ 663] x 100 = -36.2%
Formula
Percentage change = [(423 - 663) / 663] x 100
Subtract the new number by the original number
423 - 663 = -240
-240 ÷ 663 = -0.36199095022624433
-0.36199095022624433 x 100 = -36.2%