313.33% is the change from 75 to 310
Calculation steps:
[( 310 - 75 ) ÷ 75] x 100 = 313.33%
Formula
Percentage change = [(310 - 75) / 75] x 100
Subtract the new number by the original number
310 - 75 = 235
235 ÷ 75 = 3.1333333333333333
3.1333333333333333 x 100 = 313.33%