920% is the change from 80 to 816
Calculation steps:
[( 816 - 80 ) ÷ 80] x 100 = 920%
Formula
Percentage change = [(816 - 80) / 80] x 100
Subtract the new number by the original number
816 - 80 = 736
736 ÷ 80 = 9.2
9.2 x 100 = 920%
Example