20.44% is the change from 680 to 819
Calculation steps:
[( 819 - 680 ) ÷ 680] x 100 = 20.44%
Formula
Percentage change = [(819 - 680) / 680] x 100
Subtract the new number by the original number
819 - 680 = 139
139 ÷ 680 = 0.20441176470588235
0.20441176470588235 x 100 = 20.44%