-12.5% is the change from 264 to 231
Calculation steps:
[( 231 - 264 ) ÷ 264] x 100 = -12.5%
Formula
Percentage change = [(231 - 264) / 264] x 100
Subtract the new number by the original number
231 - 264 = -33
-33 ÷ 264 = -0.125
-0.125 x 100 = -12.5%