-32.96% is the change from 628 to 421
Calculation steps:
[( 421 - 628 ) ÷ 628] x 100 = -32.96%
Formula
Percentage change = [(421 - 628) / 628] x 100
Subtract the new number by the original number
421 - 628 = -207
-207 ÷ 628 = -0.32961783439490444
-0.32961783439490444 x 100 = -32.96%