2029.03% is the change from 31 to 660
Calculation steps:
[( 660 - 31 ) ÷ 31] x 100 = 2029.03%
Formula
Percentage change = [(660 - 31) / 31] x 100
Subtract the new number by the original number
660 - 31 = 629
629 ÷ 31 = 20.29032258064516
20.29032258064516 x 100 = 2029.03%