20% is the change from 685 to 822
Calculation steps:
[( 822 - 685 ) ÷ 685] x 100 = 20%
Formula
Percentage change = [(822 - 685) / 685] x 100
Subtract the new number by the original number
822 - 685 = 137
137 ÷ 685 = 0.2
0.2 x 100 = 20%
Example