1259.18% is the change from 49 to 666
Calculation steps:
[( 666 - 49 ) ÷ 49] x 100 = 1259.18%
Formula
Percentage change = [(666 - 49) / 49] x 100
Subtract the new number by the original number
666 - 49 = 617
617 ÷ 49 = 12.591836734693878
12.591836734693878 x 100 = 1259.18%