-4.6% is the change from 696 to 664
Calculation steps:
[( 664 - 696 ) ÷ 696] x 100 = -4.6%
Formula
Percentage change = [(664 - 696) / 696] x 100
Subtract the new number by the original number
664 - 696 = -32
-32 ÷ 696 = -0.04597701149425287
-0.04597701149425287 x 100 = -4.6%