-60.55% is the change from 839 to 331
Calculation steps:
[( 331 - 839 ) ÷ 839] x 100 = -60.55%
Formula
Percentage change = [(331 - 839) / 839] x 100
Subtract the new number by the original number
331 - 839 = -508
-508 ÷ 839 = -0.6054827175208581
-0.6054827175208581 x 100 = -60.55%