20.41% is the change from 681 to 820
Calculation steps:
[( 820 - 681 ) ÷ 681] x 100 = 20.41%
Formula
Percentage change = [(820 - 681) / 681] x 100
Subtract the new number by the original number
820 - 681 = 139
139 ÷ 681 = 0.20411160058737152
0.20411160058737152 x 100 = 20.41%