-13.7% is the change from 270 to 233
Calculation steps:
[( 233 - 270 ) ÷ 270] x 100 = -13.7%
Formula
Percentage change = [(233 - 270) / 270] x 100
Subtract the new number by the original number
233 - 270 = -37
-37 ÷ 270 = -0.13703703703703704
-0.13703703703703704 x 100 = -13.7%