-99.52% is the change from 421 to 2
Calculation steps:
[( 2 - 421 ) ÷ 421] x 100 = -99.52%
Formula
Percentage change = [(2 - 421) / 421] x 100
Subtract the new number by the original number
2 - 421 = -419
-419 ÷ 421 = -0.995249406175772
-0.995249406175772 x 100 = -99.52%