20.18% is the change from 684 to 822
Calculation steps:
[( 822 - 684 ) ÷ 684] x 100 = 20.18%
Formula
Percentage change = [(822 - 684) / 684] x 100
Subtract the new number by the original number
822 - 684 = 138
138 ÷ 684 = 0.20175438596491227
0.20175438596491227 x 100 = 20.18%