-7.44% is the change from 242 to 224
Calculation steps:
[( 224 - 242 ) ÷ 242] x 100 = -7.44%
Formula
Percentage change = [(224 - 242) / 242] x 100
Subtract the new number by the original number
224 - 242 = -18
-18 ÷ 242 = -0.0743801652892562
-0.0743801652892562 x 100 = -7.44%