-15.5% is the change from 271 to 229
Calculation steps:
[( 229 - 271 ) ÷ 271] x 100 = -15.5%
Formula
Percentage change = [(229 - 271) / 271] x 100
Subtract the new number by the original number
229 - 271 = -42
-42 ÷ 271 = -0.15498154981549817
-0.15498154981549817 x 100 = -15.5%