687.5% is the change from 80 to 630
Calculation steps:
[( 630 - 80 ) ÷ 80] x 100 = 687.5%
Formula
Percentage change = [(630 - 80) / 80] x 100
Subtract the new number by the original number
630 - 80 = 550
550 ÷ 80 = 6.875
6.875 x 100 = 687.5%
Example