991.25% is the change from 80 to 873
Calculation steps:
[( 873 - 80 ) ÷ 80] x 100 = 991.25%
Formula
Percentage change = [(873 - 80) / 80] x 100
Subtract the new number by the original number
873 - 80 = 793
793 ÷ 80 = 9.9125
9.9125 x 100 = 991.25%
Example