301.16% is the change from 86 to 345
Calculation steps:
[( 345 - 86 ) ÷ 86] x 100 = 301.16%
Formula
Percentage change = [(345 - 86) / 86] x 100
Subtract the new number by the original number
345 - 86 = 259
259 ÷ 86 = 3.011627906976744
3.011627906976744 x 100 = 301.16%