-17.8% is the change from 663 to 545
Calculation steps:
[( 545 - 663 ) ÷ 663] x 100 = -17.8%
Formula
Percentage change = [(545 - 663) / 663] x 100
Subtract the new number by the original number
545 - 663 = -118
-118 ÷ 663 = -0.1779788838612368
-0.1779788838612368 x 100 = -17.8%