387.14% is the change from 70 to 341
Calculation steps:
[( 341 - 70 ) ÷ 70] x 100 = 387.14%
Formula
Percentage change = [(341 - 70) / 70] x 100
Subtract the new number by the original number
341 - 70 = 271
271 ÷ 70 = 3.8714285714285714
3.8714285714285714 x 100 = 387.14%