915% is the change from 80 to 812
Calculation steps:
[( 812 - 80 ) ÷ 80] x 100 = 915%
Formula
Percentage change = [(812 - 80) / 80] x 100
Subtract the new number by the original number
812 - 80 = 732
732 ÷ 80 = 9.15
9.15 x 100 = 915%
Example