-17.41% is the change from 270 to 223
Calculation steps:
[( 223 - 270 ) ÷ 270] x 100 = -17.41%
Formula
Percentage change = [(223 - 270) / 270] x 100
Subtract the new number by the original number
223 - 270 = -47
-47 ÷ 270 = -0.17407407407407408
-0.17407407407407408 x 100 = -17.41%