-47.44% is the change from 664 to 349
Calculation steps:
[( 349 - 664 ) ÷ 664] x 100 = -47.44%
Formula
Percentage change = [(349 - 664) / 664] x 100
Subtract the new number by the original number
349 - 664 = -315
-315 ÷ 664 = -0.4743975903614458
-0.4743975903614458 x 100 = -47.44%