643.75% is the change from 80 to 595
Calculation steps:
[( 595 - 80 ) ÷ 80] x 100 = 643.75%
Formula
Percentage change = [(595 - 80) / 80] x 100
Subtract the new number by the original number
595 - 80 = 515
515 ÷ 80 = 6.4375
6.4375 x 100 = 643.75%
Example