828.92% is the change from 83 to 771
Calculation steps:
[( 771 - 83 ) ÷ 83] x 100 = 828.92%
Formula
Percentage change = [(771 - 83) / 83] x 100
Subtract the new number by the original number
771 - 83 = 688
688 ÷ 83 = 8.289156626506024
8.289156626506024 x 100 = 828.92%