-57.83% is the change from 664 to 280
Calculation steps:
[( 280 - 664 ) ÷ 664] x 100 = -57.83%
Formula
Percentage change = [(280 - 664) / 664] x 100
Subtract the new number by the original number
280 - 664 = -384
-384 ÷ 664 = -0.5783132530120482
-0.5783132530120482 x 100 = -57.83%