250.55% is the change from 91 to 319
Calculation steps:
[( 319 - 91 ) ÷ 91] x 100 = 250.55%
Formula
Percentage change = [(319 - 91) / 91] x 100
Subtract the new number by the original number
319 - 91 = 228
228 ÷ 91 = 2.5054945054945055
2.5054945054945055 x 100 = 250.55%