330% is the change from 80 to 344
Calculation steps:
[( 344 - 80 ) ÷ 80] x 100 = 330%
Formula
Percentage change = [(344 - 80) / 80] x 100
Subtract the new number by the original number
344 - 80 = 264
264 ÷ 80 = 3.3
3.3 x 100 = 330%
Example