-34.19% is the change from 664 to 437
Calculation steps:
[( 437 - 664 ) ÷ 664] x 100 = -34.19%
Formula
Percentage change = [(437 - 664) / 664] x 100
Subtract the new number by the original number
437 - 664 = -227
-227 ÷ 664 = -0.34186746987951805
-0.34186746987951805 x 100 = -34.19%