-24.82% is the change from 427 to 321
Calculation steps:
[( 321 - 427 ) ÷ 427] x 100 = -24.82%
Formula
Percentage change = [(321 - 427) / 427] x 100
Subtract the new number by the original number
321 - 427 = -106
-106 ÷ 427 = -0.24824355971896955
-0.24824355971896955 x 100 = -24.82%