-3.04% is the change from 428 to 415
Calculation steps:
[( 415 - 428 ) ÷ 428] x 100 = -3.04%
Formula
Percentage change = [(415 - 428) / 428] x 100
Subtract the new number by the original number
415 - 428 = -13
-13 ÷ 428 = -0.030373831775700934
-0.030373831775700934 x 100 = -3.04%