-52% is the change from 877 to 421
Calculation steps:
[( 421 - 877 ) ÷ 877] x 100 = -52%
Formula
Percentage change = [(421 - 877) / 877] x 100
Subtract the new number by the original number
421 - 877 = -456
-456 ÷ 877 = -0.5199543899657925
-0.5199543899657925 x 100 = -52%