16.92% is the change from 721 to 843
Calculation steps:
[( 843 - 721 ) ÷ 721] x 100 = 16.92%
Formula
Percentage change = [(843 - 721) / 721] x 100
Subtract the new number by the original number
843 - 721 = 122
122 ÷ 721 = 0.16920943134535368
0.16920943134535368 x 100 = 16.92%