320.99% is the change from 81 to 341
Calculation steps:
[( 341 - 81 ) ÷ 81] x 100 = 320.99%
Formula
Percentage change = [(341 - 81) / 81] x 100
Subtract the new number by the original number
341 - 81 = 260
260 ÷ 81 = 3.2098765432098766
3.2098765432098766 x 100 = 320.99%