341.25% is the change from 80 to 353
Calculation steps:
[( 353 - 80 ) ÷ 80] x 100 = 341.25%
Formula
Percentage change = [(353 - 80) / 80] x 100
Subtract the new number by the original number
353 - 80 = 273
273 ÷ 80 = 3.4125
3.4125 x 100 = 341.25%
Example