-51.2% is the change from 877 to 428
Calculation steps:
[( 428 - 877 ) ÷ 877] x 100 = -51.2%
Formula
Percentage change = [(428 - 877) / 877] x 100
Subtract the new number by the original number
428 - 877 = -449
-449 ÷ 877 = -0.5119726339794755
-0.5119726339794755 x 100 = -51.2%