-57.19% is the change from 939 to 402
Calculation steps:
[( 402 - 939 ) ÷ 939] x 100 = -57.19%
Formula
Percentage change = [(402 - 939) / 939] x 100
Subtract the new number by the original number
402 - 939 = -537
-537 ÷ 939 = -0.5718849840255591
-0.5718849840255591 x 100 = -57.19%