-12.22% is the change from 270 to 237
Calculation steps:
[( 237 - 270 ) ÷ 270] x 100 = -12.22%
Formula
Percentage change = [(237 - 270) / 270] x 100
Subtract the new number by the original number
237 - 270 = -33
-33 ÷ 270 = -0.12222222222222222
-0.12222222222222222 x 100 = -12.22%