-50.86% is the change from 869 to 427
Calculation steps:
[( 427 - 869 ) ÷ 869] x 100 = -50.86%
Formula
Percentage change = [(427 - 869) / 869] x 100
Subtract the new number by the original number
427 - 869 = -442
-442 ÷ 869 = -0.5086306098964327
-0.5086306098964327 x 100 = -50.86%