-89.07% is the change from 421 to 46
Calculation steps:
[( 46 - 421 ) ÷ 421] x 100 = -89.07%
Formula
Percentage change = [(46 - 421) / 421] x 100
Subtract the new number by the original number
46 - 421 = -375
-375 ÷ 421 = -0.8907363420427553
-0.8907363420427553 x 100 = -89.07%