340.66% is the change from 91 to 401
Calculation steps:
[( 401 - 91 ) ÷ 91] x 100 = 340.66%
Formula
Percentage change = [(401 - 91) / 91] x 100
Subtract the new number by the original number
401 - 91 = 310
310 ÷ 91 = 3.4065934065934065
3.4065934065934065 x 100 = 340.66%