317.07% is the change from 82 to 342
Calculation steps:
[( 342 - 82 ) ÷ 82] x 100 = 317.07%
Formula
Percentage change = [(342 - 82) / 82] x 100
Subtract the new number by the original number
342 - 82 = 260
260 ÷ 82 = 3.1707317073170733
3.1707317073170733 x 100 = 317.07%