520% is the change from 70 to 434
Calculation steps:
[( 434 - 70 ) ÷ 70] x 100 = 520%
Formula
Percentage change = [(434 - 70) / 70] x 100
Subtract the new number by the original number
434 - 70 = 364
364 ÷ 70 = 5.2
5.2 x 100 = 520%
Example