-18.87% is the change from 551 to 447
Calculation steps:
[( 447 - 551 ) ÷ 551] x 100 = -18.87%
Formula
Percentage change = [(447 - 551) / 551] x 100
Subtract the new number by the original number
447 - 551 = -104
-104 ÷ 551 = -0.18874773139745918
-0.18874773139745918 x 100 = -18.87%