668.57% is the change from 70 to 538
Calculation steps:
[( 538 - 70 ) ÷ 70] x 100 = 668.57%
Formula
Percentage change = [(538 - 70) / 70] x 100
Subtract the new number by the original number
538 - 70 = 468
468 ÷ 70 = 6.685714285714286
6.685714285714286 x 100 = 668.57%