-52.86% is the change from 891 to 420
Calculation steps:
[( 420 - 891 ) ÷ 891] x 100 = -52.86%
Formula
Percentage change = [(420 - 891) / 891] x 100
Subtract the new number by the original number
420 - 891 = -471
-471 ÷ 891 = -0.5286195286195287
-0.5286195286195287 x 100 = -52.86%