-67.41% is the change from 939 to 306
Calculation steps:
[( 306 - 939 ) ÷ 939] x 100 = -67.41%
Formula
Percentage change = [(306 - 939) / 939] x 100
Subtract the new number by the original number
306 - 939 = -633
-633 ÷ 939 = -0.6741214057507987
-0.6741214057507987 x 100 = -67.41%