-42.17% is the change from 939 to 543
Calculation steps:
[( 543 - 939 ) ÷ 939] x 100 = -42.17%
Formula
Percentage change = [(543 - 939) / 939] x 100
Subtract the new number by the original number
543 - 939 = -396
-396 ÷ 939 = -0.4217252396166134
-0.4217252396166134 x 100 = -42.17%