20.2% is the change from 683 to 821
Calculation steps:
[( 821 - 683 ) ÷ 683] x 100 = 20.2%
Formula
Percentage change = [(821 - 683) / 683] x 100
Subtract the new number by the original number
821 - 683 = 138
138 ÷ 683 = 0.2020497803806735
0.2020497803806735 x 100 = 20.2%