299.51% is the change from 206 to 823
Calculation steps:
[( 823 - 206 ) ÷ 206] x 100 = 299.51%
Formula
Percentage change = [(823 - 206) / 206] x 100
Subtract the new number by the original number
823 - 206 = 617
617 ÷ 206 = 2.995145631067961
2.995145631067961 x 100 = 299.51%