-94.46% is the change from 271 to 15
Calculation steps:
[( 15 - 271 ) ÷ 271] x 100 = -94.46%
Formula
Percentage change = [(15 - 271) / 271] x 100
Subtract the new number by the original number
15 - 271 = -256
-256 ÷ 271 = -0.9446494464944649
-0.9446494464944649 x 100 = -94.46%