-10.38% is the change from 665 to 596
Calculation steps:
[( 596 - 665 ) ÷ 665] x 100 = -10.38%
Formula
Percentage change = [(596 - 665) / 665] x 100
Subtract the new number by the original number
596 - 665 = -69
-69 ÷ 665 = -0.1037593984962406
-0.1037593984962406 x 100 = -10.38%