297.58% is the change from 207 to 823
Calculation steps:
[( 823 - 207 ) ÷ 207] x 100 = 297.58%
Formula
Percentage change = [(823 - 207) / 207] x 100
Subtract the new number by the original number
823 - 207 = 616
616 ÷ 207 = 2.975845410628019
2.975845410628019 x 100 = 297.58%