-12.5% is the change from 664 to 581
Calculation steps:
[( 581 - 664 ) ÷ 664] x 100 = -12.5%
Formula
Percentage change = [(581 - 664) / 664] x 100
Subtract the new number by the original number
581 - 664 = -83
-83 ÷ 664 = -0.125
-0.125 x 100 = -12.5%