991.03% is the change from 78 to 851
Calculation steps:
[( 851 - 78 ) ÷ 78] x 100 = 991.03%
Formula
Percentage change = [(851 - 78) / 78] x 100
Subtract the new number by the original number
851 - 78 = 773
773 ÷ 78 = 9.91025641025641
9.91025641025641 x 100 = 991.03%