-54.31% is the change from 939 to 429
Calculation steps:
[( 429 - 939 ) ÷ 939] x 100 = -54.31%
Formula
Percentage change = [(429 - 939) / 939] x 100
Subtract the new number by the original number
429 - 939 = -510
-510 ÷ 939 = -0.5431309904153354
-0.5431309904153354 x 100 = -54.31%