435% is the change from 80 to 428
Calculation steps:
[( 428 - 80 ) ÷ 80] x 100 = 435%
Formula
Percentage change = [(428 - 80) / 80] x 100
Subtract the new number by the original number
428 - 80 = 348
348 ÷ 80 = 4.35
4.35 x 100 = 435%
Example