-31.12% is the change from 421 to 290
Calculation steps:
[( 290 - 421 ) ÷ 421] x 100 = -31.12%
Formula
Percentage change = [(290 - 421) / 421] x 100
Subtract the new number by the original number
290 - 421 = -131
-131 ÷ 421 = -0.31116389548693585
-0.31116389548693585 x 100 = -31.12%