-35.54% is the change from 664 to 428
Calculation steps:
[( 428 - 664 ) ÷ 664] x 100 = -35.54%
Formula
Percentage change = [(428 - 664) / 664] x 100
Subtract the new number by the original number
428 - 664 = -236
-236 ÷ 664 = -0.35542168674698793
-0.35542168674698793 x 100 = -35.54%