-71.14% is the change from 939 to 271
Calculation steps:
[( 271 - 939 ) ÷ 939] x 100 = -71.14%
Formula
Percentage change = [(271 - 939) / 939] x 100
Subtract the new number by the original number
271 - 939 = -668
-668 ÷ 939 = -0.711395101171459
-0.711395101171459 x 100 = -71.14%