-7.85% is the change from 242 to 223
Calculation steps:
[( 223 - 242 ) ÷ 242] x 100 = -7.85%
Formula
Percentage change = [(223 - 242) / 242] x 100
Subtract the new number by the original number
223 - 242 = -19
-19 ÷ 242 = -0.07851239669421488
-0.07851239669421488 x 100 = -7.85%