-87.65% is the change from 421 to 52
Calculation steps:
[( 52 - 421 ) ÷ 421] x 100 = -87.65%
Formula
Percentage change = [(52 - 421) / 421] x 100
Subtract the new number by the original number
52 - 421 = -369
-369 ÷ 421 = -0.8764845605700713
-0.8764845605700713 x 100 = -87.65%