-15.87% is the change from 271 to 228
Calculation steps:
[( 228 - 271 ) ÷ 271] x 100 = -15.87%
Formula
Percentage change = [(228 - 271) / 271] x 100
Subtract the new number by the original number
228 - 271 = -43
-43 ÷ 271 = -0.15867158671586715
-0.15867158671586715 x 100 = -15.87%