-55.8% is the change from 939 to 415
Calculation steps:
[( 415 - 939 ) ÷ 939] x 100 = -55.8%
Formula
Percentage change = [(415 - 939) / 939] x 100
Subtract the new number by the original number
415 - 939 = -524
-524 ÷ 939 = -0.5580404685835996
-0.5580404685835996 x 100 = -55.8%