-48.37% is the change from 827 to 427
Calculation steps:
[( 427 - 827 ) ÷ 827] x 100 = -48.37%
Formula
Percentage change = [(427 - 827) / 827] x 100
Subtract the new number by the original number
427 - 827 = -400
-400 ÷ 827 = -0.4836759371221282
-0.4836759371221282 x 100 = -48.37%