-63.58% is the change from 939 to 342
Calculation steps:
[( 342 - 939 ) ÷ 939] x 100 = -63.58%
Formula
Percentage change = [(342 - 939) / 939] x 100
Subtract the new number by the original number
342 - 939 = -597
-597 ÷ 939 = -0.6357827476038339
-0.6357827476038339 x 100 = -63.58%