-5.43% is the change from 221 to 209
Calculation steps:
[( 209 - 221 ) ÷ 221] x 100 = -5.43%
Formula
Percentage change = [(209 - 221) / 221] x 100
Subtract the new number by the original number
209 - 221 = -12
-12 ÷ 221 = -0.05429864253393665
-0.05429864253393665 x 100 = -5.43%