64.86% is the change from 498 to 821
Calculation steps:
[( 821 - 498 ) ÷ 498] x 100 = 64.86%
Formula
Percentage change = [(821 - 498) / 498] x 100
Subtract the new number by the original number
821 - 498 = 323
323 ÷ 498 = 0.6485943775100401
0.6485943775100401 x 100 = 64.86%