578.75% is the change from 80 to 543
Calculation steps:
[( 543 - 80 ) ÷ 80] x 100 = 578.75%
Formula
Percentage change = [(543 - 80) / 80] x 100
Subtract the new number by the original number
543 - 80 = 463
463 ÷ 80 = 5.7875
5.7875 x 100 = 578.75%
Example