-60.84% is the change from 664 to 260
Calculation steps:
[( 260 - 664 ) ÷ 664] x 100 = -60.84%
Formula
Percentage change = [(260 - 664) / 664] x 100
Subtract the new number by the original number
260 - 664 = -404
-404 ÷ 664 = -0.608433734939759
-0.608433734939759 x 100 = -60.84%