620% is the change from 70 to 504
Calculation steps:
[( 504 - 70 ) ÷ 70] x 100 = 620%
Formula
Percentage change = [(504 - 70) / 70] x 100
Subtract the new number by the original number
504 - 70 = 434
434 ÷ 70 = 6.2
6.2 x 100 = 620%
Example