-57.23% is the change from 664 to 284
Calculation steps:
[( 284 - 664 ) ÷ 664] x 100 = -57.23%
Formula
Percentage change = [(284 - 664) / 664] x 100
Subtract the new number by the original number
284 - 664 = -380
-380 ÷ 664 = -0.572289156626506
-0.572289156626506 x 100 = -57.23%