-9.11% is the change from 428 to 389
Calculation steps:
[( 389 - 428 ) ÷ 428] x 100 = -9.11%
Formula
Percentage change = [(389 - 428) / 428] x 100
Subtract the new number by the original number
389 - 428 = -39
-39 ÷ 428 = -0.0911214953271028
-0.0911214953271028 x 100 = -9.11%
Example