7857.14% is the change from 7 to 557
Calculation steps:
[( 557 - 7 ) ÷ 7] x 100 = 7857.14%
Formula
Percentage change = [(557 - 7) / 7] x 100
Subtract the new number by the original number
557 - 7 = 550
550 ÷ 7 = 78.57142857142857
78.57142857142857 x 100 = 7857.14%