-60.99% is the change from 664 to 259
Calculation steps:
[( 259 - 664 ) ÷ 664] x 100 = -60.99%
Formula
Percentage change = [(259 - 664) / 664] x 100
Subtract the new number by the original number
259 - 664 = -405
-405 ÷ 664 = -0.6099397590361446
-0.6099397590361446 x 100 = -60.99%