-21.43% is the change from 294 to 231
Calculation steps:
[( 231 - 294 ) ÷ 294] x 100 = -21.43%
Formula
Percentage change = [(231 - 294) / 294] x 100
Subtract the new number by the original number
231 - 294 = -63
-63 ÷ 294 = -0.21428571428571427
-0.21428571428571427 x 100 = -21.43%