-51.67% is the change from 869 to 420
Calculation steps:
[( 420 - 869 ) ÷ 869] x 100 = -51.67%
Formula
Percentage change = [(420 - 869) / 869] x 100
Subtract the new number by the original number
420 - 869 = -449
-449 ÷ 869 = -0.5166858457997698
-0.5166858457997698 x 100 = -51.67%