-2.58% is the change from 271 to 264
Calculation steps:
[( 264 - 271 ) ÷ 271] x 100 = -2.58%
Formula
Percentage change = [(264 - 271) / 271] x 100
Subtract the new number by the original number
264 - 271 = -7
-7 ÷ 271 = -0.025830258302583026
-0.025830258302583026 x 100 = -2.58%