684.29% is the change from 70 to 549
Calculation steps:
[( 549 - 70 ) ÷ 70] x 100 = 684.29%
Formula
Percentage change = [(549 - 70) / 70] x 100
Subtract the new number by the original number
549 - 70 = 479
479 ÷ 70 = 6.8428571428571425
6.8428571428571425 x 100 = 684.29%