296.59% is the change from 88 to 349
Calculation steps:
[( 349 - 88 ) ÷ 88] x 100 = 296.59%
Formula
Percentage change = [(349 - 88) / 88] x 100
Subtract the new number by the original number
349 - 88 = 261
261 ÷ 88 = 2.965909090909091
2.965909090909091 x 100 = 296.59%