-51.94% is the change from 876 to 421
Calculation steps:
[( 421 - 876 ) ÷ 876] x 100 = -51.94%
Formula
Percentage change = [(421 - 876) / 876] x 100
Subtract the new number by the original number
421 - 876 = -455
-455 ÷ 876 = -0.519406392694064
-0.519406392694064 x 100 = -51.94%