-39.31% is the change from 664 to 403
Calculation steps:
[( 403 - 664 ) ÷ 664] x 100 = -39.31%
Formula
Percentage change = [(403 - 664) / 664] x 100
Subtract the new number by the original number
403 - 664 = -261
-261 ÷ 664 = -0.3930722891566265
-0.3930722891566265 x 100 = -39.31%