-64.01% is the change from 664 to 239
Calculation steps:
[( 239 - 664 ) ÷ 664] x 100 = -64.01%
Formula
Percentage change = [(239 - 664) / 664] x 100
Subtract the new number by the original number
239 - 664 = -425
-425 ÷ 664 = -0.6400602409638554
-0.6400602409638554 x 100 = -64.01%