0.12% is the change from 821 to 822
Calculation steps:
[( 822 - 821 ) ÷ 821] x 100 = 0.12%
Formula
Percentage change = [(822 - 821) / 821] x 100
Subtract the new number by the original number
822 - 821 = 1
1 ÷ 821 = 0.001218026796589525
0.001218026796589525 x 100 = 0.12%