84.57% is the change from 499 to 921
Calculation steps:
[( 921 - 499 ) ÷ 499] x 100 = 84.57%
Formula
Percentage change = [(921 - 499) / 499] x 100
Subtract the new number by the original number
921 - 499 = 422
422 ÷ 499 = 0.845691382765531
0.845691382765531 x 100 = 84.57%