458.57% is the change from 70 to 391
Calculation steps:
[( 391 - 70 ) ÷ 70] x 100 = 458.57%
Formula
Percentage change = [(391 - 70) / 70] x 100
Subtract the new number by the original number
391 - 70 = 321
321 ÷ 70 = 4.585714285714285
4.585714285714285 x 100 = 458.57%