-7.69% is the change from 221 to 204
Calculation steps:
[( 204 - 221 ) ÷ 221] x 100 = -7.69%
Formula
Percentage change = [(204 - 221) / 221] x 100
Subtract the new number by the original number
204 - 221 = -17
-17 ÷ 221 = -0.07692307692307693
-0.07692307692307693 x 100 = -7.69%