2561.11% is the change from 18 to 479
Calculation steps:
[( 479 - 18 ) ÷ 18] x 100 = 2561.11%
Formula
Percentage change = [(479 - 18) / 18] x 100
Subtract the new number by the original number
479 - 18 = 461
461 ÷ 18 = 25.61111111111111
25.61111111111111 x 100 = 2561.11%