621.43% is the change from 70 to 505
Calculation steps:
[( 505 - 70 ) ÷ 70] x 100 = 621.43%
Formula
Percentage change = [(505 - 70) / 70] x 100
Subtract the new number by the original number
505 - 70 = 435
435 ÷ 70 = 6.214285714285714
6.214285714285714 x 100 = 621.43%