936.25% is the change from 80 to 829
Calculation steps:
[( 829 - 80 ) ÷ 80] x 100 = 936.25%
Formula
Percentage change = [(829 - 80) / 80] x 100
Subtract the new number by the original number
829 - 80 = 749
749 ÷ 80 = 9.3625
9.3625 x 100 = 936.25%
Example