-42.71% is the change from 939 to 538
Calculation steps:
[( 538 - 939 ) ÷ 939] x 100 = -42.71%
Formula
Percentage change = [(538 - 939) / 939] x 100
Subtract the new number by the original number
538 - 939 = -401
-401 ÷ 939 = -0.42705005324813633
-0.42705005324813633 x 100 = -42.71%