1.81% is the change from 828 to 843
Calculation steps:
[( 843 - 828 ) ÷ 828] x 100 = 1.81%
Formula
Percentage change = [(843 - 828) / 828] x 100
Subtract the new number by the original number
843 - 828 = 15
15 ÷ 828 = 0.018115942028985508
0.018115942028985508 x 100 = 1.81%