-52.26% is the change from 664 to 317
Calculation steps:
[( 317 - 664 ) ÷ 664] x 100 = -52.26%
Formula
Percentage change = [(317 - 664) / 664] x 100
Subtract the new number by the original number
317 - 664 = -347
-347 ÷ 664 = -0.5225903614457831
-0.5225903614457831 x 100 = -52.26%