-6.7% is the change from 224 to 209
Calculation steps:
[( 209 - 224 ) ÷ 224] x 100 = -6.7%
Formula
Percentage change = [(209 - 224) / 224] x 100
Subtract the new number by the original number
209 - 224 = -15
-15 ÷ 224 = -0.06696428571428571
-0.06696428571428571 x 100 = -6.7%