253.49% is the change from 86 to 304
Calculation steps:
[( 304 - 86 ) ÷ 86] x 100 = 253.49%
Formula
Percentage change = [(304 - 86) / 86] x 100
Subtract the new number by the original number
304 - 86 = 218
218 ÷ 86 = 2.5348837209302326
2.5348837209302326 x 100 = 253.49%