-33.73% is the change from 664 to 440
Calculation steps:
[( 440 - 664 ) ÷ 664] x 100 = -33.73%
Formula
Percentage change = [(440 - 664) / 664] x 100
Subtract the new number by the original number
440 - 664 = -224
-224 ÷ 664 = -0.3373493975903614
-0.3373493975903614 x 100 = -33.73%