261.63% is the change from 86 to 311
Calculation steps:
[( 311 - 86 ) ÷ 86] x 100 = 261.63%
Formula
Percentage change = [(311 - 86) / 86] x 100
Subtract the new number by the original number
311 - 86 = 225
225 ÷ 86 = 2.616279069767442
2.616279069767442 x 100 = 261.63%