275.58% is the change from 86 to 323
Calculation steps:
[( 323 - 86 ) ÷ 86] x 100 = 275.58%
Formula
Percentage change = [(323 - 86) / 86] x 100
Subtract the new number by the original number
323 - 86 = 237
237 ÷ 86 = 2.755813953488372
2.755813953488372 x 100 = 275.58%