-52.99% is the change from 836 to 393
Calculation steps:
[( 393 - 836 ) ÷ 836] x 100 = -52.99%
Formula
Percentage change = [(393 - 836) / 836] x 100
Subtract the new number by the original number
393 - 836 = -443
-443 ÷ 836 = -0.5299043062200957
-0.5299043062200957 x 100 = -52.99%