622.86% is the change from 70 to 506
Calculation steps:
[( 506 - 70 ) ÷ 70] x 100 = 622.86%
Formula
Percentage change = [(506 - 70) / 70] x 100
Subtract the new number by the original number
506 - 70 = 436
436 ÷ 70 = 6.228571428571429
6.228571428571429 x 100 = 622.86%