437.5% is the change from 80 to 430
Calculation steps:
[( 430 - 80 ) ÷ 80] x 100 = 437.5%
Formula
Percentage change = [(430 - 80) / 80] x 100
Subtract the new number by the original number
430 - 80 = 350
350 ÷ 80 = 4.375
4.375 x 100 = 437.5%
Example