115.19% is the change from 428 to 921
Calculation steps:
[( 921 - 428 ) ÷ 428] x 100 = 115.19%
Formula
Percentage change = [(921 - 428) / 428] x 100
Subtract the new number by the original number
921 - 428 = 493
493 ÷ 428 = 1.1518691588785046
1.1518691588785046 x 100 = 115.19%