-26.66% is the change from 664 to 487
Calculation steps:
[( 487 - 664 ) ÷ 664] x 100 = -26.66%
Formula
Percentage change = [(487 - 664) / 664] x 100
Subtract the new number by the original number
487 - 664 = -177
-177 ÷ 664 = -0.26656626506024095
-0.26656626506024095 x 100 = -26.66%