-18.4% is the change from 663 to 541
Calculation steps:
[( 541 - 663 ) ÷ 663] x 100 = -18.4%
Formula
Percentage change = [(541 - 663) / 663] x 100
Subtract the new number by the original number
541 - 663 = -122
-122 ÷ 663 = -0.18401206636500755
-0.18401206636500755 x 100 = -18.4%