-15.38% is the change from 663 to 561
Calculation steps:
[( 561 - 663 ) ÷ 663] x 100 = -15.38%
Formula
Percentage change = [(561 - 663) / 663] x 100
Subtract the new number by the original number
561 - 663 = -102
-102 ÷ 663 = -0.15384615384615385
-0.15384615384615385 x 100 = -15.38%