842.5% is the change from 80 to 754
Calculation steps:
[( 754 - 80 ) ÷ 80] x 100 = 842.5%
Formula
Percentage change = [(754 - 80) / 80] x 100
Subtract the new number by the original number
754 - 80 = 674
674 ÷ 80 = 8.425
8.425 x 100 = 842.5%
Example