-38.4% is the change from 664 to 409
Calculation steps:
[( 409 - 664 ) ÷ 664] x 100 = -38.4%
Formula
Percentage change = [(409 - 664) / 664] x 100
Subtract the new number by the original number
409 - 664 = -255
-255 ÷ 664 = -0.38403614457831325
-0.38403614457831325 x 100 = -38.4%