-24.3% is the change from 428 to 324
Calculation steps:
[( 324 - 428 ) ÷ 428] x 100 = -24.3%
Formula
Percentage change = [(324 - 428) / 428] x 100
Subtract the new number by the original number
324 - 428 = -104
-104 ÷ 428 = -0.24299065420560748
-0.24299065420560748 x 100 = -24.3%