683.84% is the change from 99 to 776
Calculation steps:
[( 776 - 99 ) ÷ 99] x 100 = 683.84%
Formula
Percentage change = [(776 - 99) / 99] x 100
Subtract the new number by the original number
776 - 99 = 677
677 ÷ 99 = 6.838383838383838
6.838383838383838 x 100 = 683.84%