89.02% is the change from 428 to 809
Calculation steps:
[( 809 - 428 ) ÷ 428] x 100 = 89.02%
Formula
Percentage change = [(809 - 428) / 428] x 100
Subtract the new number by the original number
809 - 428 = 381
381 ÷ 428 = 0.8901869158878505
0.8901869158878505 x 100 = 89.02%