678.57% is the change from 70 to 545
Calculation steps:
[( 545 - 70 ) ÷ 70] x 100 = 678.57%
Formula
Percentage change = [(545 - 70) / 70] x 100
Subtract the new number by the original number
545 - 70 = 475
475 ÷ 70 = 6.785714285714286
6.785714285714286 x 100 = 678.57%