787.5% is the change from 80 to 710
Calculation steps:
[( 710 - 80 ) ÷ 80] x 100 = 787.5%
Formula
Percentage change = [(710 - 80) / 80] x 100
Subtract the new number by the original number
710 - 80 = 630
630 ÷ 80 = 7.875
7.875 x 100 = 787.5%
Example