-7.01% is the change from 271 to 252
Calculation steps:
[( 252 - 271 ) ÷ 271] x 100 = -7.01%
Formula
Percentage change = [(252 - 271) / 271] x 100
Subtract the new number by the original number
252 - 271 = -19
-19 ÷ 271 = -0.07011070110701106
-0.07011070110701106 x 100 = -7.01%