334.29% is the change from 70 to 304
Calculation steps:
[( 304 - 70 ) ÷ 70] x 100 = 334.29%
Formula
Percentage change = [(304 - 70) / 70] x 100
Subtract the new number by the original number
304 - 70 = 234
234 ÷ 70 = 3.342857142857143
3.342857142857143 x 100 = 334.29%