-27.99% is the change from 318 to 229
Calculation steps:
[( 229 - 318 ) ÷ 318] x 100 = -27.99%
Formula
Percentage change = [(229 - 318) / 318] x 100
Subtract the new number by the original number
229 - 318 = -89
-89 ÷ 318 = -0.279874213836478
-0.279874213836478 x 100 = -27.99%