-47.07% is the change from 939 to 497
Calculation steps:
[( 497 - 939 ) ÷ 939] x 100 = -47.07%
Formula
Percentage change = [(497 - 939) / 939] x 100
Subtract the new number by the original number
497 - 939 = -442
-442 ÷ 939 = -0.47071352502662406
-0.47071352502662406 x 100 = -47.07%