-97.14% is the change from 839 to 24
Calculation steps:
[( 24 - 839 ) ÷ 839] x 100 = -97.14%
Formula
Percentage change = [(24 - 839) / 839] x 100
Subtract the new number by the original number
24 - 839 = -815
-815 ÷ 839 = -0.9713945172824792
-0.9713945172824792 x 100 = -97.14%