-70.71% is the change from 939 to 275
Calculation steps:
[( 275 - 939 ) ÷ 939] x 100 = -70.71%
Formula
Percentage change = [(275 - 939) / 939] x 100
Subtract the new number by the original number
275 - 939 = -664
-664 ÷ 939 = -0.7071352502662407
-0.7071352502662407 x 100 = -70.71%