-5.56% is the change from 216 to 204
Calculation steps:
[( 204 - 216 ) ÷ 216] x 100 = -5.56%
Formula
Percentage change = [(204 - 216) / 216] x 100
Subtract the new number by the original number
204 - 216 = -12
-12 ÷ 216 = -0.05555555555555555
-0.05555555555555555 x 100 = -5.56%