21.88% is the change from 681 to 830
Calculation steps:
[( 830 - 681 ) ÷ 681] x 100 = 21.88%
Formula
Percentage change = [(830 - 681) / 681] x 100
Subtract the new number by the original number
830 - 681 = 149
149 ÷ 681 = 0.21879588839941264
0.21879588839941264 x 100 = 21.88%