-32.23% is the change from 664 to 450
Calculation steps:
[( 450 - 664 ) ÷ 664] x 100 = -32.23%
Formula
Percentage change = [(450 - 664) / 664] x 100
Subtract the new number by the original number
450 - 664 = -214
-214 ÷ 664 = -0.32228915662650603
-0.32228915662650603 x 100 = -32.23%