-20.33% is the change from 664 to 529
Calculation steps:
[( 529 - 664 ) ÷ 664] x 100 = -20.33%
Formula
Percentage change = [(529 - 664) / 664] x 100
Subtract the new number by the original number
529 - 664 = -135
-135 ÷ 664 = -0.2033132530120482
-0.2033132530120482 x 100 = -20.33%