4257.14% is the change from 7 to 305
Calculation steps:
[( 305 - 7 ) ÷ 7] x 100 = 4257.14%
Formula
Percentage change = [(305 - 7) / 7] x 100
Subtract the new number by the original number
305 - 7 = 298
298 ÷ 7 = 42.57142857142857
42.57142857142857 x 100 = 4257.14%