-18.69% is the change from 551 to 448
Calculation steps:
[( 448 - 551 ) ÷ 551] x 100 = -18.69%
Formula
Percentage change = [(448 - 551) / 551] x 100
Subtract the new number by the original number
448 - 551 = -103
-103 ÷ 551 = -0.1869328493647913
-0.1869328493647913 x 100 = -18.69%