693.75% is the change from 80 to 635
Calculation steps:
[( 635 - 80 ) ÷ 80] x 100 = 693.75%
Formula
Percentage change = [(635 - 80) / 80] x 100
Subtract the new number by the original number
635 - 80 = 555
555 ÷ 80 = 6.9375
6.9375 x 100 = 693.75%
Example