55.14% is the change from 428 to 664
Calculation steps:
[( 664 - 428 ) ÷ 428] x 100 = 55.14%
Formula
Percentage change = [(664 - 428) / 428] x 100
Subtract the new number by the original number
664 - 428 = 236
236 ÷ 428 = 0.5514018691588785
0.5514018691588785 x 100 = 55.14%