2805.56% is the change from 18 to 523
Calculation steps:
[( 523 - 18 ) ÷ 18] x 100 = 2805.56%
Formula
Percentage change = [(523 - 18) / 18] x 100
Subtract the new number by the original number
523 - 18 = 505
505 ÷ 18 = 28.055555555555557
28.055555555555557 x 100 = 2805.56%