-71.25% is the change from 939 to 270
Calculation steps:
[( 270 - 939 ) ÷ 939] x 100 = -71.25%
Formula
Percentage change = [(270 - 939) / 939] x 100
Subtract the new number by the original number
270 - 939 = -669
-669 ÷ 939 = -0.7124600638977636
-0.7124600638977636 x 100 = -71.25%