332.5% is the change from 80 to 346
Calculation steps:
[( 346 - 80 ) ÷ 80] x 100 = 332.5%
Formula
Percentage change = [(346 - 80) / 80] x 100
Subtract the new number by the original number
346 - 80 = 266
266 ÷ 80 = 3.325
3.325 x 100 = 332.5%
Example