2461.54% is the change from 26 to 666
Calculation steps:
[( 666 - 26 ) ÷ 26] x 100 = 2461.54%
Formula
Percentage change = [(666 - 26) / 26] x 100
Subtract the new number by the original number
666 - 26 = 640
640 ÷ 26 = 24.615384615384617
24.615384615384617 x 100 = 2461.54%