-39.01% is the change from 664 to 405
Calculation steps:
[( 405 - 664 ) ÷ 664] x 100 = -39.01%
Formula
Percentage change = [(405 - 664) / 664] x 100
Subtract the new number by the original number
405 - 664 = -259
-259 ÷ 664 = -0.39006024096385544
-0.39006024096385544 x 100 = -39.01%