2.55% is the change from 822 to 843
Calculation steps:
[( 843 - 822 ) ÷ 822] x 100 = 2.55%
Formula
Percentage change = [(843 - 822) / 822] x 100
Subtract the new number by the original number
843 - 822 = 21
21 ÷ 822 = 0.025547445255474453
0.025547445255474453 x 100 = 2.55%