284.62% is the change from 91 to 350
Calculation steps:
[( 350 - 91 ) ÷ 91] x 100 = 284.62%
Formula
Percentage change = [(350 - 91) / 91] x 100
Subtract the new number by the original number
350 - 91 = 259
259 ÷ 91 = 2.8461538461538463
2.8461538461538463 x 100 = 284.62%