-31.33% is the change from 664 to 456
Calculation steps:
[( 456 - 664 ) ÷ 664] x 100 = -31.33%
Formula
Percentage change = [(456 - 664) / 664] x 100
Subtract the new number by the original number
456 - 664 = -208
-208 ÷ 664 = -0.3132530120481928
-0.3132530120481928 x 100 = -31.33%